Prior COVID-19 infection combined with vaccination may lead to longer-lasting immunity

Embargoed until: Publicly released: 2022-02-17 09:00

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COVID-19 immunity after vaccination appears to wane at a much slower rate for those who have also recovered from COVID-19, according to international research. The team followed COVID-19 rates among 35,000 UK healthcare workers, 27 per cent of whom had already had COVID-19. While the researchers say immunity against infection waned significantly for those who received Pfizer, those who received AstraZeneca and those who were unvaccinated but had been previously infected with COVID-19, they say immunity remained consistently above 90 per cent for those who had COVID-19 and then were subsequently vaccinated, with immunity remaining at that level up to 18 months after their infection.

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Research Massachusetts Medical Society, Web page The URL will go live after the embargo ends

Journal/
conference: New England Journal of Medicine

Research:Paper

Organisation/s: U.K. Health Security Agency

Funder: Funded by the U.K. Health Security Agency and others; ISRCTN Registry number, ISRCTN11041050

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