COVID-19 vaccination offers durable protection against reinfection, according to two studies published Wednesday in the New England Journal of Medicine.
after recovering from COVID-19 was associated with a significantly lower risk of reinfection. Vaccine effectiveness was 82% for ages 16-64 and 60% for ages 65 and older.in Israel, “supports a public health policy of vaccinating patients who have recovered from COVID-19, particularly in places where the Delta variant is still of concern,” the study authors wrote.
Among ages 65 and older, reinfection occurred in 28 of 9,384 vaccinated participants, or about 0.3%, and 48 of 4,799 unvaccinated participants, or 1%. The differences for the older age group could mean that older COVID-19 survivors may take more precautions against reinfection after recovering from the first infection, the study authors wrote.
Among 35,768 participants, 27% had recovered from COVID-19 and had antibodies. About 95% received two vaccine doses, with 87% receiving the Pfizer vaccine and 8% receiving the AstraZeneca vaccine.
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