Long term bivalent mRNA vaccine effectiveness against COVID-19 hospitalisations and deaths in Portugal: a cohort study based on electronic health records

Long term bivalent mRNA vaccine effectiveness against COVID-19 hospitalisations and deaths in Portugal: a cohort study based on electronic health records

Abstract Background In Autumn 2022, there were recommendations for a COVID-19 booster vaccination with adapted bivalent vaccines to eligible population. Evaluating vaccine effectiveness (VE), in a short period after the vaccination, is key to guide public health decisions on the vaccine performance,...

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Bibliographic Details
Main Authors: Ausenda Machado, Irina Kislaya, Patricia Soares, Sarah Magalhães, Baltazar Nunes, On behalf of PT-EHR vaccine group
Format: Article
Language:English
Published: BMC 2025-04-01
Series:BMC Infectious Diseases
Subjects:
COVID-19
Vaccine effectiveness
Electronic health records
Cohort
Portugal
Online Access:https://doi.org/10.1186/s12879-025-10866-x
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https://doi.org/10.1186/s12879-025-10866-x

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