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. 2021 Oct 1;181(10):1407-1408.
doi: 10.1001/jamainternmed.2021.2959.

Assessment of SARS-CoV-2 Reinfection 1 Year After Primary Infection in a Population in Lombardy, Italy

Affiliations

Assessment of SARS-CoV-2 Reinfection 1 Year After Primary Infection in a Population in Lombardy, Italy

Josè Vitale et al. JAMA Intern Med. .

Abstract

This cohort study examines the rate of SARS-CoV-2 reinfection among people in Lombardy, Italy, who previously recovered from COVID-19.

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Conflict of interest statement

Conflict of Interest Disclosures: None reported.

Figures

Figure.
Figure.. Cumulative Incidence of SARS-Cov-2 Infection
RT-PCR indicates reverse-transcriptase–polymerase chain reaction.

Comment in

References

    1. Lumley SF, O’Donnell D, Stoesser NE, et al. ; Oxford University Hospitals Staff Testing Group . Antibody status and Incidence of SARS-CoV-2 Infection in Health Care Workers. N Engl J Med. 2021;384(6):533-540. doi:10.1056/NEJMoa2034545 - DOI - PMC - PubMed
    1. Hall VJ, Foulkes S, Charlett A, et al. ; SIREN Study Group . SARS-CoV-2 infection rates of antibody-positive compared with antibody-negative health-care workers in England: a large, multicentre, prospective cohort study (SIREN). Lancet. 2021;397(10283):1459-1469. doi:10.1016/S0140-6736(21)00675-9 - DOI - PMC - PubMed
    1. Hansen CH, Michlmayr D, Gubbels SM, Mølbak K, Ethelberg S. Assessment of protection against reinfection with SARS-CoV-2 among 4 million PCR-tested individuals in Denmark in 2020: a population-level observational study. Lancet. 2021;397(10280):1204-1212. doi:10.1016/S0140-6736(21)00575-4 - DOI - PMC - PubMed
    1. Harvey RA, Rassen JA, Kabelac CA, et al. . Association of SARS-CoV-2 seropositive antibody test with risk of future infection. JAMA Intern Med. 2021;181(5):672-679. doi:10.1001/jamainternmed.2021.0366 - DOI - PMC - PubMed
    1. US Centers for Disease Control and Prevention . Investigative criteria for suspected cases of SARS-CoV-2 reinfection (ICR). Accessed March 1, 2021. https://www.cdc.gov/coronavirus/2019-ncov/php/invest-criteria.html