Is one dose of vaccine enough if you've already had COVID-19?

Embargoed until: Publicly released: 2021-08-07 01:00

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In people who've already had COVID-19, one dose of Pfizer vaccine produces higher antibody levels than two vaccine doses do in those who have never been infected, according to a small US study. Importantly, the study also found that in previously infected people with a good immune response after the first dose, the second dose did not significantly change the immune response, suggesting that 1 dose may be enough for this group.

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Journal/
conference: JAMA Network Open

Research:Paper

Organisation/s: Rush University Medical Center, USA

Funder: This work was supported by Abbott Diagnostics Division Research and Development funding.

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