Protective effect of a first SARS-CoV-2 infection from reinfection: a matched retrospective cohort study using PCR testing data in England. Lacy J, Mensah A, Simmons R, Andrews N, et al. Epidemiol Infect 2022;150:e109.

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Lacy J, Mensah A, Simmons R, Andrews N, et al. Protective effect of a first SARS-CoV-2 infection from reinfection: a matched retrospective cohort study using PCR testing data in England. Epidemiol Infect 2022;150:e109.
PMID: 35607808

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