General practitioner vaccinating old patient in private clinic with copy space. Doctor giving injection to senior woman at hospital. Nurse holding syringe and using cotton before make Covid-19 or coronavirus vaccine.

The ComFluCOV vaccine study is a collaboration between the University of Bristol, University Hospitals Bristol and Weston NHS Foundation Trust and the University of Oxford, and run by the Bristol Trials Centre. The study is looking at the safety, as well as the immune responses, when giving currently approved COVID-19 vaccines at the same time as the recommended influenza (flu) vaccines from the 2020/21 flu season programme.

This study is Sponsored by University Hospitals Bristol and Weston NHS Foundation Trust (Chief Investigator Dr Rajeka Lazarus).

The study was delivered by a network of sites across England and Wales. The study is funded by the National Institute for Health Research (NIHR).

We ask that the media do not contact researchers while this critical work is underway, and instead use the press office contact details for press enquiries.

The initial study results were published in The Lancet in November 2021, and will be used to inform UK immunisation policy