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Coronavirus vaccines help protect people from getting seriously ill if they come into contact with the disease. But how do they work? And will a vaccine make you feel unwell?
The BBC’s CrowdScience presenter Marnie Chesterton explains why a Covid vaccine can’t give you the virus, and why it’s normal to experience some mild side effects, such as a headache or a raised temperature.
Voice: Marnie ChestertonVideo journalist: Jennifer GreenGraphics: We Are Covert With thanks to virologist Prof Jonathan Ball, University of Nottingham