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Meta-Analysis
. 2021 Nov;22(11):2263-2265.
doi: 10.1016/j.jamda.2021.08.042. Epub 2021 Sep 16.

Highly Effective Naturally Acquired Protection Against COVID-19 Persists for at Least 1 Year: A Meta-Analysis

Marek Petráš  1
Affiliations
Meta-Analysis

Highly Effective Naturally Acquired Protection Against COVID-19 Persists for at Least 1 Year: A Meta-Analysis

Marek Petráš. J Am Med Dir Assoc. 2021 Nov.
No abstract available

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Figures

Fig. 1
Fig. 1
Forest plot of efficacy of naturally acquired protection after COVID-19 against any reinfection (results are from a meta-analysis). H2, heterogeneity; I2, inconsistency; τ2, variance; UK, United Kingdom; US, United States of America. Particulars of the forest plot: the diamonds indicate overall efficacy, with lateral points indicating the 95% CI; the dashed lines indicate the point of pooled efficacy.
See this image and copyright information in PMC

References

    1. Pritchard E., Matthews P.C., Stoesser N. Impact of vaccination on new SARS-CoV-2 infections in the United Kingdom. Nat Med. 2021;27:1370–1378. - PMC - PubMed
    1. Wilkins J.T., Hirschhorn L.R., Gray E.L. Serologic status and SARS CoV-2 infection over 6-months of follow-up in healthcare workers in Chicago: A cohort study. Infect Control Hosp Epidemiol. 2021 Aug 9 [Epub ahead of print] - PMC - PubMed
    1. Hansen C.H., Michlmayr D., Gubbels S.M. 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;397:1204–1212. - PMC - PubMed
    1. Sheehan M.M., Reddy A.J., Rothberg M.B. Reinfection rates among patients who previously tested positive for COVID-19: A retrospective cohort study. Clin Infect Dis. 2021 ciab234. - PMC - PubMed
    1. Letizia A.G., Ge Y., Vangeti S. SARS-CoV-2 seropositivity and subsequent infection risk in healthy young adults: A prospective cohort study. Lancet Respir Med. 2021;9:712–720. - PMC - PubMed

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