Publisher Health

People may not need to self-isolate if they have been in close contact with someone with Covid, if a new trial is successful.

The government-backed research will trial giving people daily lateral flow tests for seven days – instead of quarantining for 10 days.

So long as they test negative all week, they can carry on with their lives.

From 9 May, about 40,000 close contacts of people with Covid in England will be invited to take part in the study.

Self-isolating means staying at home and not leaving it – not even to buy food or medicines, or for exercise.

As part of this major new study, people will have to test themselves every morning for seven days and will be exempt from the legal requirement to quarantine at home every day they test negative, as long as they do not show any symptoms of Covid.

Lateral flow tests give results in about 30 minutes but are considered less sensitive than PCR (polymerase chain reaction) tests, which are processed in a laboratory with results returned in 24 hours or so.

Between May 2020 and April 2021 in England, more than 6.7 million close contacts were reached and told to self-isolate, NHS Test and Trace data shows.

A large study of the test-and-trace system, published last month, found low numbers of people had followed the self-isolation rules in full.

Men, younger people and parents with young children were less likely to self-isolate – as were those from more working-class backgrounds, people in financial hardship and key workers.

Common reasons for not fully self-isolating included going to the shops or work, for a medical need, to care for a vulnerable person, to exercise or meet others – or because symptoms were only mild or getting better.

The UK regulator has always cautioned against the use of lateral flow tests in this way.

The concern is that they are not accurate enough, certainly not when used at home to correctly identify enough positive cases.

So while they were given the green light for mass testing, which they are currently being used for on the basis they would pick up some cases that would not have been identified previously, deploying them to allow close contacts to avoid isolation was deemed a step too far.

But the vaccination programme has changed the equation by reducing the risk from Covid.

It means what is proportionate needs to be reassessed.

Asking people who come into close contact to isolate has a significant cost to that individual. Is that right when the risk of Covid is lower than it once was? And will people continue to isolate given the changing landscape?

Accepting some cases will slip through the net could be a price worth paying. This trial will help understand what that price is.

Professor Isabel Oliver, Public Health England’s national infection service director, said the study would be key to informing how “the approach to testing might evolve”.

“Self-isolation is very challenging for some people, particularly those who aren’t able to work form home or don’t have access to readily available support or help from others,” she told BBC Breakfast.

“If this allows us to return to greater normality, it would be a great step forward.”

She said the study needs to recruit such a large number of people, who will be invited as part of the contact tracing process, because infection rates are relatively low at the moment.

As well as the daily lateral flow test, study participants will take a more accurate PCR test at the beginning and end of the trial period.

They will also take a PCR test if any of the daily tests gives a positive result. And anyone testing positive will be required to self-isolate as normal during the trial.

Health Secretary Matt Hancock said: “This new pilot could help shift the dial in our favour by offering a viable alternative to self-isolation for people who are contacts of positive Covid-19 cases, and one that would allow people to carry on going to work and living their lives.”

GP Dr Ellie Cannon told BBC Breakfast it was “a really positive step because we haven’t been good at self-isolation”, often because people could not afford to take time off work.

She said many people also had to self-isolate unnecessarily, “which has really stopped life in the UK over the past year”.

While lateral flow tests are not as accurate as the PCR swabs used at testing centres, their use by schools to safely reopen has shown they can be effective, Dr Cannon said.

On Saturday, a further seven deaths within 28 days of positive Covid tests were reported – and 1,907 more cases.