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Reduced Risk of Reinfection with SARS-CoV-2 After COVID-19 Vaccination — Kentucky, May–June 2021
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8 13 2021
Source: MMWR Morb Mortal Wkly Rep. 70(32):1081-1083 -
Alternative Title:MMWR Morb Mortal Wkly Rep
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Description:Although laboratory evidence suggests that antibody responses following COVID-19 vaccination provide better neutralization of some circulating Variantss than does natural infection (1,2), few real-world epidemiologic studies exist to support the benefit of vaccination for previously infected persons. This report details the findings of a case-control evaluation of the association between vaccination and SARS-CoV-2 reinfection in Kentucky during May-June 2021 among persons previously infected with SARS-CoV-2 in 2020. Kentucky residents who were not vaccinated had 2.34 times the odds of reinfection compared with those who were fully vaccinated (odds ratio [OR] = 2.34; 95% confidence interval [CI] = 1.58-3.47). These findings suggest that among persons with previous SARS-CoV-2 infection, full vaccination provides additional protection against reinfection. To reduce their risk of infection, all eligible persons should be offered vaccination, even if they have been previously infected with SARS-CoV-2.
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Pubmed ID:34383732
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Pubmed Central ID:PMC8360277
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