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Reinfection

Reinfection Rates Among Patients Who Previously Tested Positive for Coronavirus Disease 2019: A Retrospective Cohort Study

Background Protection afforded from prior disease among patients with coronavirus disease 2019 (COVID-19) infection is unknown. If infection provides substantial long-lasting immunity, it may be appropriate to reconsider vaccination distribution. Methods This retrospective cohort study of 1 health system included 150,325 patients tested for COVID-19 infection via polymerase chain reaction […]

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