1. Vaccine effectiveness against influenza hospitalisation in adults during the 2022/2023 mixed season of influenza A(H1N1)pdm09, A(H3N2) and B circulation, Europe: VEBIS SARI VE hospital network.
- Author
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Rose AMC, Pozo F, Martínez-Baz I, Mazagatos C, Bossuyt N, Cauchi JP, Petrović G, Loghin II, Vaikutyte R, Buda S, Machado A, Duffy R, Oroszi B, Howard J, Echeverria A, Andreu C, Barbezange C, Džiugytė A, Nonković D, Popescu CP, Majauskaite F, Tolksdorf K, Gomez V, Domegan L, Horváth JK, Castilla J, García M, Demuyser T, Borg ML, Tabain I, Lazar M, Kubiliute I, Dürrwald R, Guiomar R, O'Donnell J, Kristóf K, Nicolay N, Bacci S, and Kissling E
- Subjects
- Adult, Humans, Seasons, Influenza A Virus, H3N2 Subtype genetics, Case-Control Studies, Vaccine Efficacy, Europe epidemiology, Hospitalization, Hospitals, Vaccination, Influenza, Human epidemiology, Influenza, Human prevention & control, Influenza A Virus, H1N1 Subtype genetics, Influenza Vaccines, Pneumonia
- Abstract
We conducted a multicentre hospital-based test-negative case-control study to measure vaccine effectiveness (VE) against PCR-confirmed influenza in adult patients with severe acute respiratory infection (SARI) during the 2022/2023 influenza season in Europe. Among 5547 SARI patients ≥18 years, 2963 (53%) were vaccinated against influenza. Overall VE against influenza A(H1N1)pdm09 was 11% (95% CI: -23-36); 20% (95% CI: -4-39) against A(H3N2) and 56% (95% CI: 22-75) against B. During the 2022/2023 season, while VE against hospitalisation with influenza B was >55%, it was ≤20% for influenza A subtypes. While influenza vaccination should be a priority for future seasons, improved vaccines against influenza are needed., (© 2024 The Authors. Influenza and Other Respiratory Viruses published by John Wiley & Sons Ltd.)
- Published
- 2024
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