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MRNA Vaccine Effectiveness Against COVID-19-related Hospitalisations and Deaths in Older Adults: a Cohort Study Based on Data Linkage of National Health Registries in Portugal, February to August 2021

Overview
Journal Euro Surveill
Specialty Infectious Diseases
Date 2021 Sep 24
PMID 34558406
Citations 36
Authors
Baltazar Nunes
Ana Paula Rodrigues
Irina Kislaya
Camila Cruz
Andre Peralta-Santos
Joao Lima
Pedro Pinto Leite
Duarte Sequeira
Carlos Matias Dias
Ausenda Machado
Affiliations
Soon will be listed here.
Abstract

Through deterministic data linkage of health registries, mRNA vaccine effectiveness (VE) against COVID-19-related hospitalisations and deaths was measured in 1,880,351 older adults. VE against hospitalisations was 94% (95% confidence interval (CI): 88-97) and 82% (95% CI: 72-89) for those 65-79 and ≥ 80 years old, with no evidence of waning 98 days after dose two. VE against mortality was 96% (95% CI: 92-98) and 81% (95% CI: 74-87) in these two age groups.

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