Covid-19: Most UK adults had antibodies after one dose of AstraZeneca or Pfizer vaccine, data suggest

More than nine in 10 UK adults have antibodies to SARS-CoV-2 following one dose of the Oxford AstraZeneca or Pfizer BioNTech vaccine, while almost everyone does after a second dose, preliminary data suggest.1 A study of 8517 adults in England and Wales by University College London’s Virus Watch project found that 96.42% (95% confidence interval 96 to 96.79) of people who had either vaccine had…

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