AstraZeneca’s Covid Vaccine May Have Posed a Higher Heart Risk for Young Women, Study Shows

A new analysis examined deaths in Britain, where the company’s product was restricted in 2021 because of safety concerns.Young women who received at least one dose of the Covid vaccine made by AstraZeneca may have been more likely to die of a heart problem in the 12 weeks after their vaccination, according to an analysis of immunization and death records in Britain released on Monday.Those findings carry a big caveat: Britain withdrew AstraZeneca’s vaccine use for young people under 30 in April 2021, citing the risk of rare but dangerous blood clots. By that time, the young women who were immunized would have been mainly health care workers or those who were medically vulnerable, because people at high risk of Covid from their age, health or employment were vaccinated first. So the results of the study may not apply to the general population.“It could be that the people who are clinically extremely vulnerable are more susceptible to side effects from vaccination,” said Vahé Nafilyan, a senior statistician for Britain’s Office for National Statistics and one of the lead researchers on the study. The results were published on Monday in the journal Nature Communications.The analysis found six cardiac-related deaths per 100,000 young women who received at least one dose of the vaccine in Britain. In these women, the cardiac-related death was 3.5 times more likely in the 12 weeks following vaccination than after the 12-week period. Clots that block blood flow can cause a heart attack or stroke.The researchers did not find a significantly elevated risk of death in any other subgroup or with the Pfizer-BioNTech mRNA vaccine, which was also widely used in Britain. And the study did not prove that the vaccines caused the deaths.The benefits of Covid vaccines still vastly outweigh the risks, and the incidence of harmful events after vaccination remains very low, the researchers and other experts emphasized.In the analysis, Covid was associated with one additional death for every 12,000 unvaccinated young people and one additional death for every 56,000 vaccinated young people.“When you look at vaccination side effects, I think it’s very important to also look at the benefits,” Dr. Nafilyan said.The researchers linked immunization records to deaths from any cause recorded in people ages 12 to 29. They looked at data starting on Dec. 8, 2020, when the vaccines were rolled out in Britain.The mortality data came from two independent sources: deaths registered by June 8, 2022, and hospital deaths by March 31, 2022.The team found a very small increase in deaths in the 12 weeks after vaccination in young men who received a mRNA vaccine, but said that the finding was not statistically significant. Only young women — just over 177,000 — who received a dose of AstraZeneca had a higher risk of death.The analysis does not conclusively link the vaccines to the deaths, experts cautioned.“It’s enough to catch my interest and say we should study this more,” said Daniel Salmon, director of the Institute for Vaccine Safety at Johns Hopkins Bloomberg School of Public Health. But “I wouldn’t come close to drawing any causal conclusions.”“Overall it’s fairly reassuring, but it does bring up some vaccines and some populations that deserve further study,” Dr. Salmon said.Other studies have linked vaccine side effects to specific subgroups. Data from several countries link the mRNA Covid vaccines to an elevated risk of myocarditis and pericarditis — inflammation of the heart or its outer lining — particularly in males between the ages of 12 and 29.Within weeks of its introduction, the AstraZeneca vaccine was linked to a rare blood-clotting disorder, particularly in young women in Britain and other countries in Europe. The vaccine was never approved for use in the United States, but in December 2020, the Food and Drug Administration authorized a similar vaccine made by Johnson & Johnson.In April 2021, the F.D.A. called for a pause in use of the Johnson & Johnson vaccine, following reports of a blood-clotting disorder in six American women. The agency withdrew the recommended pause 10 days later, and amended the vaccine’s label to warn about the risk.A year later, the F.D.A. again restricted the vaccine’s use, saying it should be offered only to people who could not or would not opt for one of the mRNA vaccines. By then, the agency had received reports of 60 cases of the clotting disorder and nine deaths, out of 18 million doses administered.“Fortunately, as more and more of these types of data are collected and become public, we can continue to rest assured that the rate of serious side effects — referred to as adverse events — is remarkably low for both types of vaccines,” Dr. Susan Cheng, a cardiologist and epidemiologist at the Smidt Heart Institute at Cedars Sinai in Los Angeles, said of mRNA and non-mRNA vaccines.“That said, while the rates of these adverse events remains extremely low,” she said, “they are important and they need to be counted and analyzed so that we can understand them better.”

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How to Use Narcan, the Overdose-Reversing Nasal Spray

The F.D.A.’s decision to allow the overdose-reversing nasal spray to be sold over the counter means it will become much more widely available. Here is some guidance for using it correctly.Narcan, a nasal spray that can quickly reverse an opioid overdose, has now received federal approval to be sold over the counter. By late summer, it should be widely available — not just on pharmacy shelves but also at convenience stores, big box chains and possibly through online retailers.If used in time, Narcan, a version of the drug naloxone, which blocks the opioid’s effect on the brain, can be a lifesaver for someone taking opioids, including oxycodone, heroin or fentanyl.Think of Narcan or any naloxone nasal spray as a fire extinguisher, said Corey Davis, director of the Harm Reduction Legal Project at the Network for Public Health Law. “Hopefully you’ll never need it,” he said. “But at some point maybe the kitchen’s going to catch on fire and you won’t have time to run to the fire extinguisher store.”Here is some guidance for using Narcan correctly:How do I know if someone is overdosing?Their breathing may be slowed, with gurgling, or stopped altogether. Their pupils may be narrowed to a pinpoint, and their lips or fingernails may turn blue or purple. Their skin could be clammy to the touch. Even by shaking them and shouting loudly, you cannot wake them.What’s in the Narcan box?A box contains two palm-size nasal spray plunger devices, each with four milligrams of naloxone.Should I test the plunger first to make sure it’s working?No. If you prime the spray’s plunger you will release the dose and waste it.How should I use it?Gently tilt back the person’s head. Insert the spray tip into one nostril until both fingers are against the nose. Push the plunger to release the full dose.Shouldn’t I call 911 first?Call 911 after you use the spray. This is an emergency, but it can take precious minutes to alert a dispatcher. .What do I do after I’ve given the spray and called 911?Make sure the person’s airways are protected and clear. Roll the person on their side, propping their hands under their head. Bend their knees to prevent them from rolling over on their stomach or back.Please stay with the person for a few hours or until an emergency responder arrives.The kits have two doses. Should I use the second?Usually one dose will be sufficient. But if the person has not begun to wake up after two or three minutes, apply the second dose in the other nostril, particularly if you know a stronger opioid like fentanyl could have been involved.Will the spray be harmful if it turns out the person wasn’t overdosing on an opioid?No. Unless someone has an allergy to naloxone, which is rare, the safest bet is to use the spray.Are there side effects?Narcan may provoke withdrawal symptoms, including vomiting. The airways have to be kept open, to prevent choking.Other symptoms of withdrawal include: diarrhea, body aches, increased heart rate, fever, goose bumps, sweating and irritability. Remember that though opioid withdrawal is miserable, you are saving a life.Who should carry naloxone?According to reports by the Centers for Disease Control and Prevention, in 2021, bystanders were present at 46 percent of fatal opioid overdoses. If they had been carrying naloxone and knew how to use it, lives could have been saved.If you know people who use drugs even casually, or if you use opioids yourself, there is no downside to carrying Narcan. If you work at a business that has a first-aid kit on hand, why not keep a naloxone spray in it? Parents of teenagers or young adults, what about a box in your medicine cabinet? College dorms? The school nurse’s office? Libraries?Think of it much like an EpiPen for allergies, or an asthma inhaler — or, indeed, like a fire extinguisher.

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Obesity treatment could offer dramatic weight loss without surgery or nausea

Imagine getting the benefits of gastric bypass surgery without going under the knife — a new class of compounds could do just that. In lab animals, these potential treatments reduce weight dramatically and lower blood glucose. The injectable compounds also avoid the side effects of nausea and vomiting that are common with current weight-loss and diabetes drugs. Now, scientists report that the new treatment not only reduces eating but also boosts calorie burn.
The researchers will present their results today at the spring meeting of the American Chemical Society (ACS). 
“Obesity and diabetes were the pandemic before the COVID-19 pandemic,” says Robert Doyle, Ph.D., one of the two principal investigators on the project, along with Christian Roth, M.D. “They are a massive problem, and they are projected to only get worse.”
Gastric bypass and related procedures, known collectively as bariatric surgery, offer one solution, often resulting in lasting weight loss and even remission of diabetes. But these operations carry risk, aren’t suitable for everyone and aren’t accessible for many of the hundreds of millions of people worldwide who are obese or diabetic. As an alternative, Doyle says, they could tackle their metabolic problems with a drug that replicates the long-term benefits of surgery.
Those benefits are linked to a post-bypass-surgery change in the gut’s secretion levels of certain hormones — including glucagon-like peptide-1 (GLP-1) and peptide YY (PYY) — that signal fullness, curb appetite and normalize blood sugar. Current drugs that aim to replicate this effect primarily activate cellular receptors for GLP-1 in the pancreas and brain. That approach has shown great success in reducing weight and treating type 2 diabetes, drawing a lot of social media postings from celebrities in recent months. But many people can’t tolerate the drugs’ side effects, says Doyle. “Within a year, 80 to 90% of people who start on these drugs are no longer taking them.” Doyle is at Syracuse University and SUNY Upstate Medical University, and Roth is at Seattle Children’s Research Institute.
To address that drawback, various researchers have designed other treatments that interact with more than one type of gut hormone receptor. For example, Doyle’s group created a peptide that activates two receptors for PYY, as well as the receptor for GLP-1. Dubbed GEP44, this compound caused obese rats to eat up to 80% less than they would typically eat. By the end of one 16-day study, they lost an average of 12% of their weight. That was more than three times the amount lost by rats treated with liraglutide, an injected drug that activates only the GLP-1 receptor and that is approved by the U.S. Food and Drug Administration for treating obesity. In contrast to liraglutide, tests with GEP44 in rats and shrews (a mammal that, unlike rats, is capable of vomiting) revealed no sign of nausea or vomiting, possibly because activating multiple receptors may cancel out the intracellular signaling pathway that drives those symptoms, Doyle says.
In its latest results, his team is now reporting that the weight loss caused by GEP44 can be traced not only to decreased eating, but also to higher energy expenditure, which can take the form of increased movement, heart rate or body temperature.
GEP44 has a half-life in the body of only about an hour, but Doyle’s group has just designed a peptide with a much longer half-life. That means it could be injected only once or twice a week instead of multiple times a day. The researchers are now reporting that rats treated with this next-generation compound keep their new, slimmer physique even after treatment ends, which often isn’t the case with currently approved drugs, Doyle says.
But weight loss isn’t the only benefit of the peptide treatments. They also reduce blood sugar by pulling glucose into muscle tissue, where it can be used as fuel, and by converting certain cells in the pancreas into insulin-producing cells, helping replace those that are damaged by diabetes. And there’s yet another benefit: Doyle and Heath Schmidt, Ph.D., of the University of Pennsylvania, recently reported that GEP44 reduces the craving for opioids such as fentanyl in rats. If that also works in humans, Doyle says, it could help addicts quit the illicit drugs or fend off a relapse.
The researchers have filed for patents on their compounds, and they plan to test their peptides in primates. They will also study how the treatments change gene expression and rewire the brain, and what that could mean for these compounds, as well as other types of medication.
“For a long time, we didn’t think you could separate weight reduction from nausea and vomiting, because they’re linked to the exact same part of the brain,” Doyle says. But the researchers have now uncoupled those two pathways — and that has implications for chemotherapy, which causes similar side effects. “What if we could maintain the benefit of chemotherapy drugs but tell the part of the brain that causes vomiting and nausea to knock it off? Then we could dose patients at a higher level, so they would have a better prognosis, and they would also have a better quality of life while undergoing chemotherapy,” he says.

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'Critical tool' launched to track national contributions to climate change

Research published today shows how countries have contributed to global warming through their emissions of key greenhouse gases since 1850 — marking a new effort to track impacts in a critical decade for climate policy.
Involving several members of the team behind the annual Global Carbon Budget, the work builds on published records of historical emissions of carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) — gases that have made significant contributions to warming — from the pre-industrial period to 2021.
Led by Dr Matthew Jones, of the Tyndall Centre for Climate Change Research at the University of East Anglia (UEA), UK, the researchers calculated the global mean surface temperature response to emissions of all three gases, and national contributions to warming resulting from emissions of each gas, including those from fossil fuel and land use sectors.
The findings are published in the journal Scientific Data and provide a ‘ranking’ of countries that have contributed most to global warming, as well as insights into how they have changed in recent decades. For example, since 1992 when the United Nations Framework Convention on Climate Change (UNFCCC) was formed, representing a key milestone in international climate policy.
The largest contributors to warming up to 2021 through emissions of all three gases since 1850 were: USA (0.28°C / 17.3% of warming induced by global emissions of all three GHGs); China (0.20°C / 12.3%); Russia (0.10°C / 6.1%); Brazil (0.08°C / 4.9%); India (0.08°C / 4.8%); Indonesia, Germany, UK, Japan, Canada (each contributing 0.03-0.05°C).
Of the three gases, global emissions of CO2 have contributed the most to warming. Up to 2021, warming through global CO2 emission was 1.11°C, through CH4 emission it was 0.41°C and through N2O emission was 0.08°C.

Up to 2021, 69.1% of the total warming caused by the three gases was related to emissions of CO2 alone. This fraction varies across countries and is lowest in those with large agricultural sectors, because agriculture is a significant source of CH4 and N2O emissions.
For example: UK (CO2 makes up 87.6%% of warming induced by national emissions of all three GHGs); USA (83.3%); Russia (76.1%); Indonesia (71.3%); Brazil (64.7%); China (64.3%).
Emissions data for CO2 came from the Global Carbon Budget, with figures for CH4 and N2O provided by the Potsdam Institute for Climate Impact Research (PIK).
“Countries have made commitments to reduce their emissions of CO2, CH4 and N2O with the goal of avoiding the most detrimental impacts of climate change, including from drought, wildfires, flooding and sea level rise,” said Dr Jones.
“This new dataset will prove a critical tool for tracking the effect of changing national emissions on warming, for example as a result of climate policies implemented since the Paris Agreement. During the coming years, we hope to see the warming contributions by all countries level off, with no new additions to warming year-on-year, as commitments to reach net-zero emissions are met or surpassed.”
The contributions to warming of some countries have already been changing relative to others — since 1992, China has overtaken Russia to become the second largest contributor to warming, and Indonesia has overtaken Germany and the UK to become the sixth largest.

Dr Jones said: “Notably, the combined contributions to warming from Brazil, South Africa, India and China rose from 17% in 1992 to 23% in 2021, whereas the contribution from the industrialised OECD countries fell slightly from 47% to 40%.
“These examples illustrate how the contributions to global warming from industrialising nations are rising as their emissions grow relative to early-industrialisers, many of which have begun to decarbonise.”
The research also highlights how the cause of national contributions can vary across countries at different stages of industrialisation. In half of the world’s countries, the land use and forestry sectors still make a dominant contribution to the warming that countries are responsible for when considering all emissions since 1850.
“The contributions of Brazil, Indonesia and Argentina and many other countries are still dominated by emissions linked to historical deforestation and agricultural expansion since 1850,” said Dr Jones.
“However, in most countries, fossil emissions have exceeded land use during the past few decades, meaning additional contributions to warming have mainly been caused by fossil fuel emissions.
“Since 1992, the additional warming caused by global fossil fuel emissions has been over four times greater than the additional warming caused by land use change.”
Due to their long-lived or powerful effects on climate, the emissions of CO2, CH4 and N2O are regulated by the UNFCCC, with targets set for CO2 through nationally determined contributions (NDCs) under the Paris Agreement. Around 90% of NDCs include targets for CH4 and N2O.
Therefore, keeping track of the emissions of CO2, CH4 and N2O and the climatic responses to those is especially important for ensuring accountability with respect to NDCs.
This work also seeks to inform the first Global Stocktake of the UNFCCC, the process set out in the Paris Agreement to assess national progress towards achieving the pact’s goal to limit global warming to 1.5°C. The findings will be presented at COP28 this year.
The team behind the new dataset includes scientists from the Center for International Climate Research (CICERO) in Norway, PIK and Ludwig Maximilian University of Munich in Germany, the International Institute for Applied Systems Analysis (IIASA) in Austria, the Woodwell Climate Research Center in the USA, and University of Exeter in the UK.
Co-author Prof Pierre Friedlingstein, of Exeter’s?Global Systems Institute, said: “This publication is quite unique. It will provide not only an annual update on the greenhouse gas emissions for all countries of the world, but also their respective contribution to global warming. The dataset reveals the dominant role of some key countries such as USA, China or EU27, together responsible for 40% of the global warming due to CO2, CH4 and N2O.”
Unlike previous datasets of national contributions, this one will be updated regularly (at least annually) as new national emissions figures become available, for example alongside publication of the Global Carbon Budget. It is publicly available via an online repository.
“By focussing on the three gases that most countries include in their NDCs, this dataset is uniquely positioned to informing climate policy and benchmarking,” said Dr Jones. “It should become a living resource for continually tracking contributions to climate change and, more importantly, how those are changing.”
The warming caused by these three gases is close to IPCC-reported values. The current study does not consider the cooling effect of aerosols emitted by human activities, which the IPCC estimates to be 0.4°C, nor the warming effect of some other emitted gases such as chlorofluorocarbons. These emitted aerosols and gases rarely feature in NDCs.
‘National contributions to climate change due to historical emissions of carbon dioxide, methane, and nitrous oxide since 1850’, Matthew Jones et al, is published in Scientific Data on March 29.

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Surgical sealing made better with robust thermosensitive bioadhesives

As part of a collaborative effort, scientists from the Terasaki Institute for Biomedical Innovation (TIBI) have employed inventive chemistry to produce an injectable biomaterial with significantly improved adhesive strength, stretchability, and toughness. This chemically modified, gelatin-based hydrogel had attractive features, including rapid gelation at room temperature and tunable levels of adhesion. This custom-engineered biomaterial is ideal as a surgical wound sealant, with its controllable adhesion and injectability and its superior adherence to a variety of tissue and organ surfaces.
In order to provide closure for surgical wounds, the material must provide effective sealing on wet, slippery tissue surfaces, which vary in shape and could possibly involve tissue movement (an expanding lung, for example) or crumbly textures. The application and effectiveness of the sealant must also be within a suitable timeframe for surgical procedures.
Standard methods of suturing and stapling can be ineffective and time-consuming and can result in increased blood loss. Other methods using fibrin-based bioadhesive sealants are costly, exhibit insufficient adhesion, and can be prone to viral transmission.
Commercial gelatin-based wound dressings, although offering biocompatibility, low cost, and hemostatic effectiveness, lack adhesive strength due to inherent brittleness. Previous efforts to address poor adhesion problems have been made via functionalization with catechol, a naturally occurring compound that can impart adhesive capabilities when bound to gelatin. However, the small number of binding sites on the gelatin results in limited level of adhesion that can be enabled by catechol functionalization.
The researchers chose caffeic acid (CA), a catechol-containing compound found in coffee and olive oil, to increase the tissue adhesion efficacy of gelatin. They first oxidized CA to yield CA oligomers (CAO) which involve a small number of repeating catechol units. Coupling these CA derivatives to gelatin amplified chemical binding of catechol groups and boosted their adhesive function.
The engineered bioadhesive sealant had superior adhesive strength, stretchiness, toughness, and injectability, along with the ability for rapid gelation when applied to the wound site and showed stable adhesion in physiological conditions.

Furthermore, the sealants were designed to adhere to tissue in a selective manner. This is pivotal for an effective sealant, as there needs to be tight bonding at the sealant-tissue interface and non-binding on the opposite face of the sealant, which is exposed to the bodily environment.
Validation tests using the new sealant on wet collagen sheets, as well as burst pressure experiments to test the limits of its adhesive strength, demonstrated its effectiveness and proved contrary to previous reports of the detrimental effects of oxidative chemistry.
Experiments conducted on pig lung, heart, and bladder wounds showed that the new sealant had adhesive strength an order of magnitude higher than commercial gelatin-based sealants; the sealant also remained affixed to the tissue surface even after experimental scraping and twisting.
The new sealant was also shown to be biocompatible. In addition, it was shown to have drug loading and drug release capabilities and could promote antioxidant effects beneficial to wound healing. This versatile strategy can be adapted as a powerful approach to impart strong adhesion to other biomaterials.
“Our team has utilized manipulative and strategic chemistry to significantly improve adhesive strength and versatility in biomaterials,” said Ali Khademhosseini, TIBI’s Director and CEO. “This creates exciting possibilities for more effective surgical wound management in the clinic.”
Authors are: Hossein Montazerian, Elham Davoodi, Alireza Hassani Najafabadi, Reihaneh Haghniaz, Avijit Baidya, Nasim Annabi, Ali Khademhosseini, and Paul S. Weiss.
This work was supported by the National Institutes of Health (1R01EB023052-01A1 and 1R01HL140618-01).

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How To Use Narcan to Save a Life

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The Incredible Challenge of Counting Every Global Birth and Death

Listen to This ArticleAudio Recording by AudmThe roads surrounding the Jerusalén-San Luis Alto Picudito Indigenous reservation in Putumayo, Colombia, are treacherous on a good day. Made mostly of gravel and mud, they narrow to barely the width of a small truck in some places, and in others, especially after a storm, they yield almost completely to the many rivers with which they intersect. They also twist and turn and bump without stop. So, in the most difficult months of her pregnancy, when everything tasted like cardboard and it hurt even to sit or stand, Marleny Mesa avoided traveling altogether. This meant skipping checkups at the clinic in Villagarzón, which could take two hours or more to get to. But Marleny wasn’t overly worried. A nurse had assured her early in her pregnancy that her blood work was good and that everything looked fine. As a midwife herself, Marleny knew that making the trip would be riskier than missing a few doctor’s visits.But now, in the final days of her pregnancy, she could not shake the feeling that something was wrong. She could barely breathe, for one thing. For another, her anxiety and physical discomfort were approaching what felt like an unbearable peak. Her husband, Andrés Noscue, called for an ambulance. Hours passed, and none came. He’d tried to find a car to take her to the hospital. He’d also summoned Marleny’s sister Omaira, a prophet of their church, to come pray over her belly. That seemed to do the trick. Marleny’s breathing evened out, and a week or so later, she delivered a tiny, squirming boy with jet black hair and soft, curious eyes. The couple named him Eliad.Marleny thought he was perfect, but her mother, a retired midwife, insisted that the placenta contained a hint of trouble. It was far too big, she said, and Eliad was too small, probably because he did not have enough room in her womb to grow. His grandmother thought he might need an incubator. Marleny thought he was fine, but when the baby was a few days old, she and Andrés took him to Villagarzón for a checkup, just to be safe.This proved harder than they expected. The baby could not be seen at the hospital there until he had a civil identification or registration number, which he could not get without a birth certificate, which the hospital could not provide because the baby was born at home. Go to the registrar’s office, the nurses told Marleny and Andrés. But the registrar’s office only sent Andrés back to the hospital, where a different nurse told them to try the notary’s office instead. By then it was almost noon. The only bus of the day would be heading back to San Luis soon; if Andrés and his family missed it, they would have to cough up more money for room and board in town than they normally spent in a week. So they went home.The couple returned a few days later, but the registrar’s instructions were different and more complicated this time. They would need two witnesses from their reservation, he said, and several documents — including one with the baby’s blood type and another showing the medical care Marleny received during her pregnancy — in order to prove that he was born inside the nation’s borders and that he was, in fact, their child. The man seemed suspicious, Andrés said, and asked many questions that he did not ask the first time. “There was nothing we could do,” Andrés told me one sweltering July afternoon as we sat in the shade of his family’s covered wooden porch. “They didn’t believe the child was ours, so we went home again.” The couple planned to return to Villagarzón as soon as they were able to stay overnight, so they could sort everything out once and for all. But before they got the chance, Eliad developed a terrifying rash — with blisters on his head and face — and began gasping for breMarleny Mesa, a 34-year-old midwife, performing a checkup last July at a patient’s home in Putumayo, a department of Colombia. Midwives successfully petitioned to be allowed to issue birth certificates to the newborns they help birth.Juan Arredondo for The New York TimesThe family returned to Villagarzón for the third time. Marleny waited at the hospital while Andrés went to the notary. This time he was in luck: A clerk there put him in touch with Leydi Rodríguez, a community health worker who works with a program known as Colombia Rural Vital, one of several initiatives begun by the nonprofits Vital Strategies and Bloomberg Philanthropies as part of a broader effort to improve birth-and-death registries around the world. By the organizations’ estimate, some two billion people do not have birth certificates, and only half of the 60 million or so deaths that occur each year are recorded in any meaningful way. The consequences of this failure are manifold and frequently dire: Families like the Noscues struggle to access the rights and benefits of citizenship. Government officials struggle to allocate resources and formulate evidence-based health policies. And a roster of identity-based crimes — from election chicanery to child trafficking — are allowed to proliferate.The problem of inadequate registries is most pressing in the low-income nations of Africa and Southeast Asia. But it is not confined to those regions. In Colombia, birth and death registration is especially spotty in Indigenous and Afro-descendant communities, where the national government tends to have little presence and registrars and notaries tend to apply the rules arbitrarily. Colombia Rural Vital was created to simplify and democratize this process.Rodríguez, a petite woman in her mid-30s who exudes an earnest pluck, rushed to the notary’s office soon after the clerk called her. She asked Andrés a series of questions about Eliad, entered his answers into an app on her tablet and certified the baby’s birth and parentage, all in less than an hour. Andrés would need to complete a few more forms, she explained, but Eliad had a birth certificate now and could see the doctor right away. Andrés took the certificate to the hospital. The news there was far less comforting. Eliad had a serious bladder infection and several possible birth defects. The child was very sick, the doctor told them. The couple should have brought him in sooner.The world’s wealthiest nations are awash in so much personal data that data theft has become a lucrative business and its protection a common concern. From such a vantage point, it can be difficult to even fathom the opposite — a lack of any identifying information at all — let alone grapple with its implications. But the undercounting of human lives is pervasive, data scientists say. The resulting ills are numerous and consequential, and recent history is littered with missed opportunities to solve the problem.More than two decades ago, 147 nations rallied around the Millennium Development Goals, the United Nations’ bold new plan for halving extreme poverty, curbing childhood mortality and conquering infectious diseases like malaria and H.I.V. The health goals became the subject of countless international summits and steady news coverage, ultimately spurring billions of dollars in investment from the world’s wealthiest nations, including the United States. But a fierce debate quickly ensued. Critics said that health officials at the United Nations and elsewhere had almost no idea what the baseline conditions were in many of the countries they were trying to help. They could not say whether maternal mortality was increasing or decreasing, or how many people were being infected with malaria, or how fast tuberculosis was spreading. In a 2004 paper, the World Health Organization’s former director of evidence, Chris Murray, and other researchers described the agency’s estimates as “serial guessing.” Without that baseline data, progress toward any given goal — to halve hunger, for example — could not be measured.There were many barriers to obtaining those baselines, but the underlying problem was clear. Because many low- and-middle-income nations did not have functioning systems for civil registries and vital statistics, about one-third of all births and a vast majority of deaths were not being counted in the first place. Rather than develop those systems, health officials had come to rely on a mess of surveys, censuses and computer models that provided only crude estimates of specific illnesses. Effective birth and death registries would help paint a far more accurate picture, critics argued. But the surveys and censuses were faster and cheaper, and with a roster of disease-specific programs now competing for resources, whole-system reforms took a back seat.“It’s a bit of a Catch-22,” says Prabhat Jha, a professor of global health at the University of Toronto. “When you don’t have good data, you turn to clever mathematical models. They can be really quite wrong at the country level, but global funders and politicians think, ‘Oh, we’ve got data,’” which then undermines the case for investing in more robust fixes.Dr. Kevin Carvajal helping deliver a boy via C-section at the hospital in Mocoa last summer. He would later enter the boy’s vital measurements and his parents’ information into Colombia’s national registry so a birth certificate could be issued.Juan Arredondo for The New York TimesIn 2015, the United Nations set out to correct this problem, with yet another bold initiative — this one aimed at ensuring that all births and at least 80 percent of deaths would be routinely registered by 2030. But more than seven years in, that effort is falling far short of its goals. “It’s probably the single most critical failure of development in the past 30 years,” says Philip Setel, a medical and demographic anthropologist who directs the civil-registration initiative at Vital Strategies. “Not only because of how pervasive or underappreciated the problem is, but because of how broad its impacts are.” Bangladeshi widows can’t secure land rights or survivor benefits without the means to register their spouses’ deaths. Rwandan street children can’t attend school or access the legal economy because they lack valid birth certificates. And young girls across Southeast Asia can’t extract themselves from forced marriages without a way to prove their own ages or identities. “It’s disastrous,” says Stephen MacFeely, director of data and analytics at the World Health Organization. “Especially when you consider this is a really basic, fundamental metric. These are the two bookends of life, and we still don’t have a good handle on either.”The pandemic made these shortfalls difficult to ignore. From the earliest days of the first outbreaks, as scientists struggled to grasp how deadly the coronavirus actually was or to guess how long any given wave might last, elected officials and their constituents found themselves transfixed by maps and graphs and striking exponential growth curves. But if those emblems of the crisis created a feeling of understanding and control, the facts remained elusive. As with the Millennium Development Goals, at least part of the problem came down to a question of baselines. “You can’t contact-trace people that you don’t know exist in the first place,” MacFeely says. “You can’t allocate vaccines properly, or tell how severe a given variant is, if you don’t know how many people it’s killing.”Three years into the pandemic, Covid’s true death toll remains impossible to determine. In May 2022, the World Health Organization concluded that it was likely 2.5 times as high as previously reported: 15 million, as opposed to six million. By then, scientists were estimating that India’s death toll from Covid was probably six times as high as officials there initially said. A 2021 report in the journal eLife also noted large gaps between the figures government officials gave and what impartial analysis suggested — in Belarus, Egypt, Nicaragua, Russia, Tajikistan, Uzbekistan and elsewhere. Some of that undercounting was deliberate and political; the lower the death toll in a territory, the better any given leader’s pandemic response looks. But not all of it was. Death counts have remained low throughout sub-Saharan Africa for most of the pandemic. But death registries are especially weak in that part of the world, and scientists say it remains unclear whether those countries were truly spared or if hundreds of thousands of Covid deaths were simply never reported. “I think eventually we’ll find out,” says Chris Murray, now the director of the Institute for Health Metrics and Evaluation at the University of Washington School of Medicine. “But it is remarkable how much uncertainty there is on a subject that’s actually quite important.”It’s clear, meanwhile, that when it comes to fortifying our data systems, time is not on our side. As the pandemic wanes, a number of other pathogens — mpox, measles, influenza — are wreaking fresh havoc. With the planet warming, scientists say that we may soon find ourselves confronting several pandemics at once. “The only way to protect ourselves from these assaults will be to protect everyone else,” says Tom Inglesby, director of the Johns Hopkins Center for Health Security. “Especially those who are most vulnerable or least able to protect themselves.” The first step to doing that — to understanding who they are, how they live and what they are most likely to die of — will be to count them.Marleny comes from a long line of midwives and had already borne four children herself, but she could not remember ever taking an infant to a hospital. She was bewildered when the doctors in Villagarzón told her that Eliad needed to be transferred to a bigger facility in Puerto Asís, a city two hours in the opposite direction. And she became angry when the nurses in Puerto Asís took the baby from her arms and, without preamble, whisked him off to intensive care. How could it help to separate a newborn from his mother? Why could she not go to the I.C.U. with him? One nurse suggested that she return to her reservation because the baby would be there for a while. Another told her that she could come back during visiting hours to nurse him if she wanted.The following morning, she says, she found Eliad in the I.C.U., cold and wet, covered in vomit and turning purple. He was wailing. Marleny wanted to take him home immediately. If he was going to die, she thought, better it be there, where she could care for him herself. Eventually a doctor explained to Marleny why the baby had to stay: He needed an incubator and antibiotics and at least a few weeks to heal.Rosalia Lopez, a 66-year-old midwife, taking the blood pressure of a 16-year-old patient as part of a monthly prenatal visit near Riosucio, a rural town in the Chocó department.Juan Arredondo for The New York TimesThe couple spent those weeks in Puerto Asís, staying with relatives and using the bulk of their savings to cover personal expenses as well as the hospital fees for diapers and other supplies. Marleny, who was allowed to see her baby only during visiting hours, could not help thinking he might have been spared all this suffering if the doctors in Villagarzón had not turned him away in his first few weeks of life.The Noscue family’s experience did not surprise Edna Margarita Valle, the lead coordinator at Colombia’s national statistics department, DANE. Valle is based in Bogotá but spends the better part of her year visiting communities that can be reached only by river or airplane. She has met people in their 60s and 70s who have never had any legal identity. She has also encountered scores of families whose experiences mirror those of the Noscues. When I visited her office in July, she showed me one video in which a family in La Guajira — across the country from San Luis — described traveling four hours by motorcycle with their newborn in tow, only to be sent away by the registrar. “It’s the norm,” she said. “The registrars have been working in these places forever, and they treat it like their own store or their own private business. Families are often forced to pay for their birth certificates, a document that is really a basic human right.”National civil registries are relatively new in Colombia. For much of the country’s long history, births and deaths were logged primarily by the Catholic Church, and the best way to obtain a birth certificate was to have a baby baptized. But in the early 1990s, a new constitution strengthened the separation of church and state; a law guaranteeing health care to all citizens created new incentives for parents to register their children with the national government; and a new agency began collecting that data and producing statistics from it. But if those advances improved the government’s ability to count and analyze its population, they also created a yawning disparity between wealthy urban centers, like Bogotá and Medellín, and the impoverished rural regions that claim most of the nation’s physical space.A member of the archive team at the José María Hernández hospital in Mocoa, Colombia, sorting through decades-old medical files to filter out those of deceased patients.Juan Arredondo for The New York Times“Nationally, we have about 85 to 90 percent coverage now,” Víctor Hugo Álvarez Castaño, former director of epidemiology at Colombia’s Ministry of Health, told me. “But that last 15 percent makes up the poorest, most disenfranchised segment of the population. You’re talking about five or six million people. And because they aren’t registered, it’s as if they don’t exist.” As a result, health officials still struggle to identify and respond to health crises in those communities. In the Sierra Nevada de Santa Marta in northern Colombia, a recent whooping-cough outbreak was allowed to fester for weeks. In La Guajira, public-health agencies are still trying to map a childhood malnutrition crisis that the Inter-American Court of Human Rights found amounted to a human rights violation on the part of the Colombian government. And in Putumayo, where many births and deaths still happen far from hospitals and clinics, families like the Noscues are routinely thwarted by bureaucracies that they can neither grasp nor navigate.In principle at least, Colombia Rural Vital’s approach to this problem is simple. When a baby is born, or someone dies outside a hospital, the people connected to that event — family members, funeral directors, community leaders — send a text message to a toll-free number. The text is routed through a telephone and computer network that enables health workers like Leydi Rodríguez to see it. An investigation is begun, the vital event is verified and a birth or death certificate is issued.But if those steps are clear, so are the hurdles. Individuals and institutions must still be persuaded to report their births and deaths in this way. And because many villages don’t have reliable cellphone service, it’s tough to say what portion of sent texts reach the platform. The program is operational in just 25 of the nation’s 317 highly rural municipalities. Proponents are eager to see it expand, but in the wake of Covid, with the economy convulsed and resources thin, expansion has been difficult. Most rural hospitals don’t have the resources to hire and train sufficient staff members, and at those that do, officials don’t always see the point. Only seven of the 13 municipalities in Putumayo, where the Noscues live, have bothered to join the pilot project. “We are waiting for the strategy to become a law so that the municipalities are obliged to have at least one person who is fully trained and devoted to this work,” Franqui Moreno, a doctor in the epidemiology department of Putumayo, told me.Sonyer Alejandra Salas Guillén reviewing the birth certificate for her newborn son, Ithan Mathias Morales Salas, in Mocoa last August.Juan Arredondo for The New York TimesIn the meantime, he said, success hinges almost entirely on the tenacity of community health workers like Rodríguez, who are underpaid and tend to work on contracts that are subject to cancellation by municipal leaders. Despite those difficulties, Rodríguez, and others like her, often do triple duty: promoting the program to the communities they work in (a task they refer to as “socializing the program”), following up on the reports that make it to the platform and employing their own on-the-ground strategies to capture the births and deaths that are still slipping through the cracks. The work can be both tedious and risky. Armed groups control many of the territories Rodríguez frequents, and the motorbike she relies on to get her from one outlying village to the next is old and prone to breakdowns. Still, she loves her job. “We are uncounted, too,” she told me as we drove through Putumayo in mid-July. “We know what it is to be overlooked by our government, and it’s our job to stop that from happening to others.”Counting initiatives can be a tough sell. Uncovering problems like preventable illnesses or poor nutrition can increase the pressure on officials to address them. And overcoming individual apathy can be difficult in places where the benefits of citizenship (education, health care, social services) are paltry and the barriers to civil registration are high. In many low- and-middle-income countries, a substantial portion of births and deaths still occur away from institutional eyes. Families who want to register those events must not only gather documents (a tall order for people who cannot read or write) but also summon witnesses and often make arduous journeys to the nearest registrar.A key to resolving these difficulties, says Anushka Mangharam, a former technical adviser for Vital Strategies, is to take the registrar to the people. That’s an easy enough proposition when it comes to births: Parents who want health care or education for their children have obvious incentives to welcome such intrusions. But when it comes to death, the benefits can be harder to discern. And revisiting a painful loss often exacts a heavy emotional toll.To encourage people to register the deaths of loved ones, health workers use a technique called verbal autopsy, which is exactly what its name suggests: a standardized interview with the family of the deceased, in which a set series of questions is posed and the answers entered into an app on a tablet or cellphone. That information is then analyzed by algorithms and health officials to determine the most likely cause of death. Critics say that the algorithms are far from perfect and that it’s especially difficult to distinguish among conditions with similar symptoms, like lung cancer and respiratory infections. But proponents say that even with those shortcomings, verbal autopsies can still give health officials a much clearer picture of where and how people are dying.Dora Burbano, right, a nurse at Orito General Hospital who tracked and verified deaths for Colombia Rural Vital, and her assistant Marlen Patino, left, conducting a verbal autopsy with Aura Carmelina Nastacuas, whose mother died at her home in the Awá Indigenous community of Agua Blanca in Putumayo.Juan Arredondo for The New York TimesFor one thing, they enable health workers to count more deaths. For another, they help standardize a process that often gets short shrift. In many parts of the world, doctors aren’t adequately trained to assess the cause of death or to accurately fill out death certificates. In communities with significant shortages of trained health professionals, these forms are often completed by people with no medical experience at all. Verbal autopsies make it possible for those with even minimal training to collect the necessary information. Early trials of the approach have been eye-opening: In Sierra Leone, maternal mortality was found to be much lower than expected. In Bangladesh, drowning was found to be a leading cause of death among children, and construction-site accidents were a more common killer of adults than previously realized. In India, the Million Death Study — a seminal trial of verbal autopsies, designed by Jha and conducted in 1.3 million households beginning in 2001 — upended the nation’s understanding of sickness and death: Malaria was far more common among adults than anticipated, H.I.V. was rarer and snake bites were claiming tens of thousands more lives than officials had assumed.In Colombia, health officials have been promoting verbal autopsy as a means of shoring up death registration in rural regions like Putumayo. In my second week there, I traveled to Orito, another rural municipality just 100 miles or so from where the Noscues live, to observe these efforts up close.I was planning to spend the day with Dora Burbano, then a nurse at Orito General Hospital who tracked and verified deaths for Colombia Rural Vital (the Vital Strategies program). A new armed group, which seemed to be an offshoot of the Revolutionary Armed Forces of Colombia (FARC), had just blanketed the city with fliers claiming possession of the territory and issuing several new restrictions, including a 5 p.m. curfew. As we discussed whether to modify those plans, we received news that a funeral director the team worked with had been shot and killed that morning. The circumstances of his death were unclear. The only thing anyone could say for certain was that he had been stopped at a checkpoint on his way to one of the remote villages. But Burbano’s employers decided that it was too risky for health workers to travel. The verbal autopsies would have to be done at the hospital, or at some halfway point.Burbano — a 44-year-old single mother of two who grew up in Orito and followed in her mother’s footsteps by becoming a nurse at the local hospital — remained calm in the face of these developments. As a young girl, she watched as her own mother was summoned by armed men to tend to their wounded and, on at least one occasion, to prepare a corpse for burial. In the year or so since Colombia Rural Vital introduced its initiative in Orito, she had become a medical detective of sorts, traveling from village to village, cultivating sources and ferreting out unreported deaths. At the time of my visit, she was keeping tabs on several that had yet to be certified. They included a 14-year-old girl who either hanged herself or was killed by her father and then hanged to make it look like a suicide; a man who was crushed to death by a falling tree; and several grandparents whose existence may never have been registered in any way but whose deaths now needed to be counted.Dr. Maricel Tovar inspecting the body of an 82-year-old woman who died in her sleep in Suba last August and was found by her grandson. Tovar later conducted a verbal autopsy with family members.Juan Arredondo for The New York TimesOur first case that morning involved a man named Rodolfo whose wife and daughter had recently died. His wife’s death had been registered (it occurred in the hospital), but his daughter’s had not (because she died at home). Rodolfo was obstinate when Burbano first contacted him. He saw no reason to discuss such a painful event with strangers, he said. He would rather his family be left in peace. But Burbano met his resistance with so much empathy and calm persistence that when the plan changed and he was asked to travel to the hospital rather than receive her at his home, he went willingly.Now he was seated across from her in an empty conference room. He stared into the middle distance as she explained the verbal-autopsy process and then began with her questions.Did the baby have sudden convulsive seizures? No, he replied.Did she lose consciousness, have a stiff neck or get a faraway look? No.Did she have any rash on her body? No,Did her stomach seem bigger than normal, here, as if it was swollen? No.By now, Rodolfo’s eyes were tearing. He shifted in his seat and began tapping his left heel rapidly enough to make both knees shake. He seemed poised to stand up and leave. Burbano had learned from experience when to offer condolences — when to pat a shoulder or take a hand — and when to give a wider berth. She paused now, tilted her head slightly and regarded her client with solemnity and warmth. When his knees stopped shaking and he was able to meet her gaze, she resumed her questioning. Fifteen or so minutes later, they were finished.The intensive-care unit in Puerto Asís was like a netherworld between life and death. Eliad spent several weeks there before his bladder infection cleared. The doctors said he would need to see several specialists. But it would take weeks to schedule those appointments, so in the meantime his parents were free to take him home.The Noscue home — a spacious but only partially enclosed wooden structure — lacked the hospital’s amenities. Electricity was too erratic to power a refrigerator. The rains and the humidity brought a dampness that was often impossible to escape. But to Marleny’s mind, the things that home could provide more than compensated for those deficits: quiet so the baby could rest, the constant presence of loved ones and an abundance of plants that would enable her to treat at least some of her son’s ailments herself.Andrés wanted to make several improvements to the house, but those plans were delayed, owing partly to the low price of pineapples. He farmed them, and the market was saturated. Like most families on the reservation — and some 40 percent of families in the country — the Noscues hovered near the World Bank’s poverty line of $8.60 per day for a family of four. In Putumayo, the surest way to rise above that line was to switch from pineapples to coca. The Colombian and United States governments have spent decades trying to disrupt that calculus. Their interventions include aerial fumigation campaigns, the creation of a palm-oil industry and a steady persecution of farmers like the Noscues. But a majority of the world’s cocaine still comes from Colombia, and Putumayo remains one of the nation’s leading producers.The 2016 peace accord between FARC and the Colombian government was supposed to curb the appeal of coca growing, in part by bringing the trappings of government — not just roads and clinics, but plumbing and electricity, schools and shops, economic opportunities — to departments like Putumayo. But progress has been glacial, and armed groups still hold far greater sway over many communities than the national government. Colombia is one of the most unequal nations in Latin America, a fact that neither the cease-fire nor the economic gains of recent decades have done much to alter. And as a result of the pandemic, Indigenous groups — like the Nasa people to which Marleny and Andrés belong — have only fallen further behind.Midwives preparing to board a boat to access communities on the Atrato River, near Riosucio. Midwives in Colombia can register births in the national database, a crucial service for people in remote regions, where clinics are few and far between and civil registrars often nonexistent.Juan Arredondo for The New York TimesNowhere are the disparities more apparent than in health care. Technically, it has long been available to all, thanks to the universal health care law passed when Andrés and Marleny were children. But in practice, the barriers to access are often insurmountable: a lack of reliable transportation; clinics that are understaffed and often difficult to reach; doctors and nurses who can be hostile to the Black and Indigenous communities they serve; and a bureaucratic thicket of referrals and authorizations that exacerbates all those things. Eliad spent nearly a month in intensive care in Puerto Asís, but it was not until his follow-up appointments — at three different hospitals in three different cities — that the nature and extent of his condition became clear.Pasto was the most difficult of those cities to get to. The family had to travel from San Luis to Villagarzón, stay overnight and then take a six-hour bus ride to Pasto early the next morning. The distance between Villagarzón and Pasto is less than 100 miles, but a stretch of road linking the two cities is widely regarded as the worst in all of Colombia. Known as “the trampoline of death” and said to be teeming with ghosts, it snakes along hairpin-thin mountain ridges that give way to 100-foot drops on one side and steep mudslide-prone cliffs on the other. Marleny was already uncomfortable, having recently injured her hip in a fall, but Eliad was not a fussy baby; he slept peacefully in Andrés’s arms for most of the ride. The doctor in Pasto was kind. She saw Eliad right away and made careful study of the notes Marleny brought from the other hospitals. But she was also firm. The baby had several serious birth defects, including a heart murmur for which he would need surgery and pulmonary stenosis, which meant that a valve connecting his heart to his lungs was narrowing as he grew. He would have to grow a little more before any operations could be performed, and in the meantime Marleny and Andrés would have to be vigilant about doctors’ appointments and follow-up care. They would also have to keep their hopes in check: Some children like their son recovered with surgery and survived to adulthood, but many did not.Back home, Eliad gave no sign that he sensed these long odds. He suckled readily, smiled and cooed, charmed his mother. Marleny took scores of pictures and videos of him on her cellphone, hushing Andrés whenever he reminded her to conserve battery power for emergencies. Their son was feisty and spirited, she thought. And he seemed to be getting stronger. As they waited for him to grow into his first operation, she could not help but nurture a small blossom of hope.For decades, the burden of fixing birth and death registries — of counting the uncounted — has rested mostly on health officials. When MacFeely joined the World Health Organization in 2021, he was surprised to discover how intractable the problem seemed. “I wrote a blog post about it, and people were reaching out saying, ‘Oh, we made the same arguments 30 years ago,’” he told me recently. “I’m like, how the hell is this still a problem in this day and age?” But in the years since, he has come to see the challenge of accurate birth and death counts as much bigger than the health ministries charged with addressing them. It’s not just that health officials don’t control the registries or the purse strings. It’s that the registries implicate, and are implicated in, every aspect of the state: public health, local governance, basic human rights. MacFeely has come to think of the issue as a tragedy of the commons. Birth and death counts are like the environment or the ocean, he says: Because nobody quite owns them, no one takes responsibility for fixing them.Progress is nonetheless being made. In Rwanda, officials have amended laws to make registration easier and have vastly expanded the number of registration offices throughout the country. In Bangladesh, the national government has created a cabinet-level office devoted to building a modern civil registration and vital statistics program. And in Colombia, a new central computerized system will soon make it far easier to churn vital event data into the kind of statistics that can be used to guide health policy. Verbal-autopsy initiatives are taking root and mobile technology is being employed in all those countries and elsewhere. “It’s not a pipe dream anymore to say that we can count all births and deaths everywhere,” says Setel, the Vital Strategies anthropologist. “We have the technology to do that. It doesn’t even necessarily need to be superexpensive.”Luisa Jiménez on the phone with her husband before the burial of their 3-day-old son, Ángel Haziel Tenorio Jiménez, in Villagarzón last summer.Juan Arredondo for The New York TimesBut for the scores of individual pilot programs that are emerging now to morph into strong national institutions, leaders in every sphere of government will have to step up. “We have to stop thinking of this as a health problem and start looking at it as a whole-of-government issue,” MacFeely says. Health ministries will not be enough. Heads of state will have to get involved, and they will have to do more than just establish or strengthen registries. They will have to scale up social services in ways that pay more than lip service to the marginalized. Citizenship is only as valuable as the rights and protections it provides. And the problem of birth and death registration is inextricably bound to the problem of social-safety nets.In this regard, the Noscues’ story offers a parable of sorts: In principle at least, every Colombian citizen has access to the nation’s health care system. But without reliable roads or accessible clinics, Marleny was forced to carry and deliver her baby without the benefits of that resource. As a result, her enlarged placenta went undiagnosed, and her baby was caught in a vicious cycle: born at home because his parents could not access the health care system, and then unable to access the health care system because he was born at home.As they waited to see how he would fare, Eliad’s family did all they could to spoil him. Whenever he woke from a nap or began cooing, they would stop what they were doing and flock to him. Andrés encouraged Marleny to set aside her other responsibilities and spend every moment she could with the baby — partly to make sure he was OK, but also to savor him as much as possible.So when he began spitting up excessively one Friday, nearly two weeks after their visit to Pasto, his parents noticed immediately. He didn’t have a fever or other symptoms, but he could not seem to keep anything down. Marleny gathered plants and prepared an anti-nausea brew, which appeared to settle his stomach. But the couple agreed that if the sickness returned, they would take him to the hospital.The weekend passed, and Eliad once again seemed to push through his difficulties. By Saturday he was cooing and smiling again — well enough to join the family at church that evening. But on Sunday, when Marleny woke, he was short of breath. “We should leave,” she said, waking Andrés. It was still dark out. The bus would not come for hours. Andrés called for an ambulance, without much hope, and then went out to look for transportation while Marleny alternated between readying Eliad for the hospital and trying to soothe him as best she could. She yelled for her father to bring a blanket (“One does not know what to do in that desperation,” she told me later). But before she could wrap him up, the baby fell asleep. And then, after a few short breaths, his heart stopped beating.Marleny Mesa and her husband, Andrés Noscue, taking part in a verbal autopsy with members of the Colombia Rural Vital team a few weeks after their son Eliad Noscue Mesa died.Juan Arredondo for The New York TimesHis funeral was a blur. Marleny remembers only that the viewing and Mass took a full day and that their church honored him with a formal street procession en route to the graveyard. She remembers leaving home with the baby in her arms and returning several hours later, completely empty.Weeks later, when spring had yielded to summer and she and Andrés were settled deep into their grief, Rodríguez, the health worker, and several nurses visited the family to perform a verbal autopsy and provide a death certificate. They spent a full hour questioning Marleny and Andrés about Eliad’s illness and the circumstances of his death. The information they collected would be fed into a computer and sent to a national repository, where it would join a mountain of similar data. That data would be churned into statistics on who was dying in Colombia and how, and eventually those statistics would be used to shape policies and guide resources. But nothing in that long process would alter the basic facts: Eliad Noscue Mesa lived for 87 days and died in the same house where he was born. His life was infinitesimally short and packed with far more than its share of suffering. But he had still known joy. He had known his family’s love, and his time here had mattered to them.Marleny and Andrés took some comfort in knowing that, at the very least, his life had now been counted.Juan Arredondo is a photographer whose work focuses on social inequality and human-rights issues.

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Hospitals Are Increasingly Crowded With Kids Who Tried to Harm Themselves, Study Finds

Hospitalizations for pediatric suicidal behavior increased by 163 percent over an 11-year period, an analysis of millions of hospital admissions in the United States found.The portion of American hospital beds occupied by children with suicidal or self-harming behavior has soared over the course of a decade, a large study of admissions to acute care hospitals shows.An analysis of 4,767,840 pediatric hospitalizations by researchers at Dartmouth, published on Tuesday in the medical journal JAMA, found that between 2009 and 2019, mental health hospitalizations increased by 25.8 percent and cost $1.37 billion.The study did not include psychiatric hospitals, or reflect the years of the coronavirus pandemic, suggesting that it is a considerable undercount.Especially striking was the rise in suicidal behavior as a cause: The portion of pediatric mental health hospitalizations involving suicidal or self-harming behavior rose to 64.2 percent in 2019, from 30.7 percent in 2009. As a proportion of overall pediatric hospitalizations, suicidal behavior rose to 12.7 percent in 2019 from 3.5 percent in 2009.Though the rise in suicidal behavior among American youths is well-established, the study underlines the gaping inadequacies in our health system, said Dr. Gabrielle A. Carlson, director of child and adolescent psychiatry at Stony Brook University medical school, who was not involved in the new study.“You have got a whole system failure here that is registering itself in suicidal kids,” Dr. Carlson said. Parents seeking care for children, she said, encounter a series of frustrations: Clinicians who don’t take insurance or aren’t taking new patients; crisis interventions staffed by low-paid, poorly trained workers; insurers that don’t reimburse well.“The hospital ends up being the place you go when all else fails,” Dr. Carlson said. “Could you have nipped it in the bud earlier? That is a systems-of-care problem.” She added, “This is playing itself out in an attention-grabbing way.”The study analyzed the Kids’ Inpatient Database, the largest nationally representative database of pediatric acute care discharges, which includes patients under the age of 21. Mental health hospitalizations rose significantly in children between the ages of 11 and 14, but they declined in younger and older age groups during the same 11-year period. Girls became a larger portion of mental health hospitalizations, rising to 61.1 percent in 2019 from 51.8 percent in 2009. Hospitalizations for suicidal behavior rose to 129,699 in 2019 from 49,285 in 2009.The study did not examine what caused the trends, but Dr. JoAnna Leyenaar, one of the paper’s co-authors, pointed to “a growing, growing use of social media among children and adolescents and in particular, growing use among younger adolescents,” which she said had been shown to increase symptoms of depression.Whatever the reason, she added, “we don’t have the magic formula to figure out how to dial this back and make things better.”Dr. Leyenaar said the research was informed by her personal experience as a hospital pediatrician: Though her training included no formal mental health experience beyond a six-week rotation in medical school, children hospitalized after a suicide attempt or self injury are now a central focus of her working life.“Five years ago, my care for these patients didn’t look very different from my care for children with respiratory illnesses,” said Dr. Leyenaar, an associate professor of pediatrics at Dartmouth’s Geisel School of Medicine. Her team has added trainings on safety planning and cognitive behavioral therapy, in the hope that younger doctors “leave residency better equipped to care for youth with mental health conditions than we did.”The findings should spur policymakers to place more mental health care services in school and community settings, which “may well result in decreased hospitalizations,” said Mary Arakelyan, a research project manager at Dartmouth Health Children’s and another co-author. Meanwhile, she said, hospitals should confront their increasingly central role as mental health providers.“For so long, the culture has been, in the hospital, that medical emergencies are the true emergencies,” said Dr. Christine M. Crawford, a child and adolescent psychiatrist at Boston Medical Center, who was not involved in the study.Mental health training, she said, should be given throughout the hospital, “kind of like how everyone in the medical staff is trained on how to do CPR.” And, she said, hospitals need to be incentivized to add inpatient psychiatric units, which, because of reimbursement rates, “hemorrhage money.”The study traced a major shift in the kinds of mental health problems being treated in hospitals, with depressive disorders rising to 56.8 percent in 2019 from 29.7 percent in 2009. Hospitalizations for bipolar disorders, conduct disorders and psychotic disorders like schizophrenia decreased, which could reflect better outcomes due to early intervention programs and more wraparound care.Rates of suicidal behavior are a “marker of distress” among children who lack coping skills to manage stress and “big emotions,” said Dr. Crawford, who is also an assistant professor at Boston University School of Medicine.“When you actually talk to kids who engage in self-harm, who impulsively ingest the Tylenol, they oftentimes talk about an argument that they had with a peer, or a disagreement that they had with an adult,” she said.In most cases, she said, these children have suffered from diagnosable depression for “many, many months” without being treated. “The kids we’re seeing in the emergency room are doing this rather impulsively in the context of some argument,” she said.

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Retinal scans: A non-invasive, inexpensive method to track human aging

Buck Institute professor Pankaj Kapahi thinks the eye is a window to aging. His lab, in collaboration with Google Health and Zuckerberg San Francisco General Hospital, has shown how imaging of the fundus, the blood vessel-rich tissue in the retina, can be used to track human aging, in a way that is noninvasive, less expensive and more accurate than other aging clocks that are currently available. Publishing in eLife, researchers also did a genome-wide association study (GWAS) to establish the genetic basis for such a clock, which they call eyeAge.
“This type of imaging could be really valuable in tracking the efficacy of interventions aimed at slowing the aging process,” says Kapahi, a senior co-author of the study. “The results suggest that potentially, in less than one year we should be able to determine the trajectory of aging with 71% accuracy by noting discernable changes in the eyes of those being treated, providing an actionable evaluation of gero-protective therapeutics.” Kapahi noted that retinal scans are likely more reliable because changes in the eye are less susceptible to day-to-day fluctuations compared to biomarkers from the blood which are more dynamic and can be influenced by something as simple as eating a meal or a current infection.
A growing body of evidence suggests that the microvasculature in the retina might be a reliable indicator of the overall health of the body’s circulatory system and the brain. Changes in the eye accompany aging and many age-related diseases including age-related macular degeneration (AMD), diabetic retinopathy, and Parkinson’s and Alzheimer’s disease. Ophthalmologists can often detect early symptoms of AIDS, chronic high blood pressure and tumors in the eyes, a utility that is not surprising given that any subtle changes in the vascular system first appear in the smallest blood vessels, and capillaries in the retina are among the smallest in the body.
But subtle changes in these small blood vessels often go undetected by even the most sophisticated instruments, necessitating the use of deep learning, an effort spearheaded by Google Research. Researchers from Google and elsewhere developed models to predict diabetic retinopathy from retinal images and have gone on to use retinal images to identify at least 39 eye diseases including glaucoma, diabetic retinopathy, and AMD, as well as non-eye diseases such as chronic kidney disease and cardiovascular disease.
Google researchers trained and tuned the model for eyeAge using their well-studied EyePACS data set which involves more than 100,00 patients and applied it to patients from the UK Biobank, which involved more than 64,000 patients.
“Our study emphasizes the value of longitudinal data for analyzing accurate aging trajectories. Through EyePACS longitudinal dataset involving multiple scans from individual people over time our results show a more accurate positive prediction ratio for two consecutive visits of individual rather than random, time-matched individuals,” says Sara Ahadi, co-corresponding author and a former Fellow at Google Research who is now Senior Computational Biologist at Alkahest. Noting that eyeAge is independent from phenotypic age (a well-established aging clock based on blood markers), Ahadi adds, “We are looking at aging through a different lens and bringing more information to the table. We hope eyeAge will be utilized along with other clocks to make tracking aging more robust, powerful and comprehensive.”
The GWAS was done at the Buck Institute utilizing biological samples available from the UK Biobank. Kenneth Wilson, a postdoc at the Buck Institute, validated some of the genes that were highlighted in the analysis, building on previous Buck research that uncovered a connection between diet, eye health and lifespan in Drosophila. Wilson identified nearly 30 genes from patient samples that are associated with visual decline, diabetes, hearing loss, Alzheimer’s disease, cardiovascular disease and stroke. One of the genes, ALKAL2, has been previously shown to extend lifespan in Drosophila (via the fly homolog ALK). When Wilson knocked down the gene in the flies, it improved their vision later in life and extended their lifespan.
Kapahi says results from the research are ripe for more study. “It would be really informative to understand how these genes, which are already linked to other age-related diseases, are affecting the changes we are seeing in the eye,” he says. “This is human data that provides targets for potential treatments for age-related diseases. The fact that we might be able to track their efficacy in such a low cost, non-invasive way is a huge plus.”

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