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COVID-19 vaccines effectiveness against symptomatic disease and severe outcomes...

Brazete, C; Brazete, J; Alves, F; Aguiar, A; Gonçalves, AM; Cardoso, M; Sá, L; Gonçalves, E; Pinto, M; Duarte, R

Objectives: This study evaluated the effectiveness of COVID-19 vaccines in preventing symptomatic and severe disease.Study design: This was an observational test-negative case-control study.Methods: Study participants were adults with at least one symptom included in the World Health Or-ganization COVID-19 definition who sought health care in a public emergency department between 1 November 2021 and 2 March 202...

Date: 2023   |   Origin: Repositório Aberto da Universidade do Porto
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