Covid-19 news: Prior infection boosts response to single Pfizer jab

A nurse prepares a syringe with a dose of the Pfizer-BioNtech Covid-19 vaccine.

FRED TANNEAU/AFP via Getty Images

Latest coronavirus news as of 5pm on 30 April

Single dose of Pfizer vaccine may not generate sufficient immune response against coronavirus variants

Most people in the UK who have received a coronavirus vaccine have so far only gotten a single dose, which may not…



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