Long term bivalent mRNA vaccine effectiveness against COVID-19 hospitalisations and deaths in Portugal: a cohort study based on electronic health records
These results support the need for yearly boosters of COVID-19 vaccination to maximise the protection of the senior population against COVID-19 severe disease. Additional (spring boosters) during a vaccination campaign should be evaluated considering the epidemiological context and results from long-term VE studies.
Authors
- Irina Kislaya (ORCID: https://orcid.org/0000-0001-5772-2416)
- Sarah Magalhães
- Ausenda Machado (ORCID: https://orcid.org/0000-0002-1849-1499)
- Patrícia Soares (ORCID: https://orcid.org/0000-0001-5033-9115)
- Baltazar Nunes (ORCID: https://orcid.org/0000-0001-6230-7209)
Institutions
- Serviços Partilhados do Ministério da Saúde (PT)
- National Institute of Health Dr. Ricardo Jorge (PT)
- Universidade Nova de Lisboa (PT)
- Bernhard Nocht Institute for Tropical Medicine (DE)
Publication Details
- Journal
- BMC Infectious Diseases
- Published
- 2025-04-23
- DOI
- https://doi.org/10.1186/s12879-025-10866-x
- Primary Topic
- SARS-CoV-2 and COVID-19 Research
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Fundação para a Ciência e a Tecnologia