Researchers testing whether second dose of different vaccine could generate stronger immune response
Ministers are considering giving people a different type of Covid vaccine as an autumn booster, it has emerged, after early results from “mix and match” trials appeared to show promise for an enhanced immune response.
Four different coronavirus jabs have been approved for use in the UK, with more under regulatory review. While people are currently offered two doses of the same jab, researchers have been exploring whether offering a second dose of a different Covid vaccine could generate a stronger immune response.
