After COVID-19 Infection, Antibodies Highly Protective for Months: Study |
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After COVID-19 Infection, Antibodies Highly Protective for Months: Study

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Following SARS-CoV-2 infection, antibodies protect most healthcare workers from reinfection for up to 6 months, suggested the first prospective study of the subject.

Investigators looked for the presence of two antibodies to SARS-CoV-2 among 12,541 healthcare workers in the United Kingdom, including nearly 10% who had a history of polymerase chain reaction (PCR)–confirmed infection. In all, 223 who did not have antibodies tested positive on PCR for the virus during 31 weeks of follow-up; two participants who did not have antibodies at baseline tested positive. The odds of a subsequent positive PCR test result were 1.09 per 10,000 days at risk among individuals who did not have antibodies, compared to 0.13 per 10,000 days among those with anti-spike antibodies.The findings were published online in The New England Journal of Medicine… (Medscape)

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