In the UK a spring booster campaign has recently begun, offering an additional vaccine to people at highest risk from COVID. Between April and June 2023 people aged over 75, residents in care homes and children and adults aged five and up with weakened immune systems will be invited to get their next shot.
For some this will be their sixth dose to date. But as immunity from COVID vaccines begins to wane in the months afterwards, this is a sensible precaution to help protect the most vulnerable against serious illness, hospitalisation and death should they contract the virus.
During this vaccination campaign the UK will be using the updated bivalent vaccines from Pfizer and Moderna (which target omicron alongside the original COVID strain) as well as another type of vaccine made by Sanofi.
