Retrospective cohort study finds low suspected SARS-CoV-2 reinfection rates among recovered COVID-19 patients, indicating sustained early immunity but heightened risk among women.
In a retrospective cohort study, among 131 773 patients with previous coronavirus disease 2019 (COVID-19), reinfection with severe acute respiratory syndrome coronavirus 2 (SARS-COV-2) was suspected in 253 patients (0.2%) at 238 US healthcare facilities between 1 June 2020 and 28 February 2021. Women displayed a higher cumulative reinfection risk. Healthcare burden and illness severity were similar between index and reinfection encounters.
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Lawandi et al. (2021) studied this question.
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