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- Title
Effectiveness of Pfizer-BioNTech and Moderna Vaccines Against COVID-19 Among Hospitalized Adults Aged ≥65 Years - United States, January-March 2021.
- Authors
Tenforde, Mark W.; Olson, Samantha M.; Self, Wesley H.; Talbot, H. Keipp; Lindsell, Christopher J.; Steingrub, Jay S.; Shapiro, Nathan I.; Ginde, Adit A.; Douin, David J.; Prekker, Matthew E.; Brown, Samuel M.; Peltan, Ithan D.; Gong, Michelle N.; Mohamed, Amira; Khan, Akram; Exline, Matthew C.; Files, D. Clark; Gibbs, Kevin W.; Stubblefield, William B.; Casey, Jonathan D.
- Abstract
Adults aged ≥65 years are at increased risk for severe outcomes from COVID-19 and were identified as a priority group to receive the first COVID-19 vaccines approved for use under an Emergency Use Authorization (EUA) in the United States (1-3). In an evaluation at 24 hospitals in 14 states,* the effectiveness of partial or full vaccination† with Pfizer-BioNTech or Moderna vaccines against COVID-19-associated hospitalization was assessed among adults aged ≥65 years. Among 417 hospitalized adults aged ≥65 years (including 187 case-patients and 230 controls), the median age was 73 years, 48% were female, 73% were non-Hispanic White, 17% were non-Hispanic Black, 6% were Hispanic, and 4% lived in a long-term care facility. Adjusted vaccine effectiveness (VE) against COVID-19-associated hospitalization among adults aged ≥65 years was estimated to be 94% (95% confidence interval [CI] = 49%-99%) for full vaccination and 64% (95% CI = 28%-82%) for partial vaccination. These findings are consistent with efficacy determined from clinical trials in the subgroup of adults aged ≥65 years (4,5). This multisite U.S. evaluation under real-world conditions suggests that vaccination provided protection against COVID-19-associated hospitalization among adults aged ≥65 years. Vaccination is a critical tool for reducing severe COVID-19 in groups at high risk.
- Subjects
COVID-19 vaccines; COVID-19; ACADEMIC medical centers; FLU vaccine efficacy; ADULTS
- Publication
MMWR: Morbidity & Mortality Weekly Report, 2021, Vol 70, Issue 18, p674
- ISSN
0149-2195
- Publication type
journal article
- DOI
10.15585/mmwr.mm7018e1