Background Knowledge regarding factors predicting the SARS-COV-2 reinfection risk is scarce and it has major implications in public health policies. We aimed to identify factors associated with the risk of symptomatic SARS-COV-2 reinfection. Methods We conducted a nationwide retrospective cohort study and 99,993 confirmed cases of COVID-19 were analyzed. Results The overall risk of reinfection (28 or more elapsed days between both episodes onset) was 0.21% (incidence density, 2.5 reinfections per 100,000 person-days) and older subjects and those with the mild primary disease were at reduced risk of the event. Healthcare workers and immunosuppressed or renal patients had at greater risk of SARS-COV-2 reinfection. Conclusions If replicated in other populations, these results may be useful to prioritize efforts focusing on the reduction of SARS-COV-2 spread and the related burden.
【저자키워드】 COVID-19, severe acute respiratory syndrome coronavirus 2, Health personnel, Risk reduction behavior, 【초록키워드】 public health, risk, healthcare worker, Spread, Reinfection, symptomatic, Patient, Mild, incidence, disease, Immunosuppressed, reduction, confirmed case, retrospective cohort study, Factor, reduced risk, effort, renal, implication, populations, Result, greater, analyzed, identify, conducted, replicated, elapsed, older subject, 【제목키워드】 healthcare worker, Immunosuppressed, high risk, individual,