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email article Young adult men who were previously infected with COVID-19 were not completely protected against reinfection, a study of U.S. marines found. Among 189 Marines who were seropositive but free of current SARS-CoV-2 infection at baseline, 10% tested positive for SARS-CoV-2 via PCR during a 6-week follow-up period, reported Stuart Sealfon, MD, of Icahn School of Medicine at Mount Sinai in New York City, and colleagues. Not surprisingly, viral loads were about 10 times lower compared with initially seronegative participants who tested positive, and those who tested positive again were more likely to have a weaker immune response, Sealfon and colleagues wrote in

New yorkUnited statesUniversitario fundaciCarlos guijarroMolly walkerStuart sealfonIcahn school of medicine at mount sinaiHealth action response for marinesIcahn schoolMount sinaiNew york cityLancet respiratoryAction responseHospital universitario fundaciRespir medபுதியது யார்க்