Exclusive: calls for regular boosters after a sharp drop in immunity three to seven months after jabs
Immunity declines steeply among care home residents in the months after Covid vaccination, a study has found, leading to calls for regular boosters for the most vulnerable.
The study of more than 15,000 care home residents found that protection against hospitalisation and death fell by one-third three to seven months after vaccination. The decline is far sharper than that seen in younger people, where immunity against infection wanes, but protection against severe illness appears to be robust.
