End of season 2022/2023 quadrivalent influenza vaccine effectiveness in preventing influenza in primary care in Portugal

Using a test-negative case–control design, we aim to estimate influenza vaccine effectiveness (VE) against medically attended laboratory-confirmed influenza in Portugal in 2022/2023 season. Between week 41/2022 and week 14/2023, data on 592 patients with influenza-like illness aged 18 or more years...

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Bibliographic Details

Published in:	Human Vaccines & Immunotherapeutics
Main Authors:	Irina Kislaya, Ana Rita Torres, Licínia Gomes, Aryse Melo, Ausenda Machado, Camila Henriques, Nuno Verdasca, Raquel Guiomar, Ana Paula Rodrigues, National Influenza Surveillance Network
Format:	Article
Language:	English
Published:	Taylor & Francis Group 2023-12-01
Subjects:	Vaccine effectiveness influenza primary care Portugal A(H3N2)
Online Access:	https://www.tandfonline.com/doi/10.1080/21645515.2023.2263219