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. 2024 Apr 3;10:e52047. doi: 10.2196/52047

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©Xinchun Gu, Conall Watson, Utkarsh Agrawal, Heather Whitaker, William H. Elson, Sneha Anand, Ray Borrow, Anna Buckingham, Elizabeth Button, Lottie Curtis, Dominic Dunn, Alex J. Elliot, Filipa Ferreira, Rosalind Goudie, Uy Hoang, Katja Hoschler, Gavin Jamie, Debasish Kar, Beatrix Kele, Meredith Leston, Ezra Linley, Jack Macartney, Gemma L Marsden, Cecilia Okusi, Omid Parvizi, Catherine Quinot, Praveen Sebastianpillai, Vanashree Sexton, Gillian Smith, Timea Suli, Nicholas P B Thomas, Catherine Thompson, Daniel Todkill, Rashmi Wimalaratna, Matthew Inada-Kim, Nick Andrews, Victoria Tzortziou-Brown, Rachel Byford, Maria Zambon, Jamie Lopez-Bernal, Simon de Lusignan. Originally published in JMIR Public Health and Surveillance (https://publichealth.jmir.org), 03.04.2024.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in JMIR Public Health and Surveillance, is properly cited. The complete bibliographic information, a link to the original publication on https://publichealth.jmir.org, as well as this copyright and license information must be included.

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Change in the rate of presentation of patients with influenza-like illness to primary care from 1967 to 2022. The year of introduction of different flu vaccines has been added, and the data are 4 weekly averages. The point “65+” indicates the introduction of the flu vaccine for all people aged 65 years or older. “LAIV” indicates the introduction of the live attenuated influenza vaccine for school children. “aTIV” indicates the introduction of the adjuvanted trivalent influenza vaccine to improve vaccine effectiveness in people aged 65 years or older. BRU: Birmingham Research Unit; RWE: Real World Evidence; SQL: structured query language.