Nealon, Joshua http://orcid.org/0000-0003-1538-4636
Modin, Daniel
Ghosh, Rebecca E. http://orcid.org/0000-0001-6009-3040
Rudin, Deborah
Gislason, Gunnar
Booth, Helen P.
Jensen, Jens Ulrik Stæhr
Williams, Rachael
Shepherd, Hilary http://orcid.org/0000-0001-7794-4155
Yelland, Eleanor
Bricout, Helene
Chaves, Sandra S. http://orcid.org/0000-0002-9453-7057
Biering-Sørensen, Tor
Article History
Received: 9 July 2021
Accepted: 20 January 2022
First Online: 23 February 2022
Competing interests
: J.N., D.R., H.B. and S.C. are employees of Sanofi Pasteur, a company which makes influenza vaccines. H.Bo, R.E.G., H.S., R.W. and E.Y. are employees of Clinical Practice Research Datalink. CPRD is jointly sponsored by the UK government’s Medicines and Healthcare products Regulatory Agency (MHRA) and the National Institute for Health Research (NIHR). As a not-for-profit UK government body, CPRD seeks to recoup the cost of delivering its research services to academic, industry, and government researchers through research user license fees. The remaining authors declare no competing interests.