Seropositive healthy young adults still at risk of reinfection |
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Seropositive healthy young adults still at risk of reinfection

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New research published in The Lancet Respiratory Medicine has found that seropositive healthy young adults are still at risk of reinfection.A prospective cohort study was conducted as part of the COVID-19 Health Action Response for Marines study (CHARM) to examine the risk of reinfection in healthy young adults who were seropositive for a previous SARS-CoV-2 infection. The study included male recruits, aged 18–20 years, from the US Marine Corps. They were first put under a two-week unsupervised home quarantine followed by a two-week supervised quarantine when they returned to the marine quarantine facility.Seropositive young adults had lower risk of reinfection vis a vis the seronegative individuals. During the 6-week study period, 10% of seropositive participants (19 / 189) had at least one positive PCR test for SARS-CoV-2. On the other hand, 48% of seronegative participants ...
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