JC has participated in Patient Public Involvement for University College London and University Hospitals Bristol. JC has been a National Institute for Health and Care Excellence Covid Expert Panel lay member and a patient representative for other boards and organisations in the UK and Europe. JC has also been a received honorarium from GlaxoSmithKlein for patient review expert engagement and is a citizen scientist member for the Global Horizon scanning panel of the COVID-END Evidence synthesis network. All other authors declare no competing interests. This Correspondence and our work are independent research jointly funded by the National Institute for Health Research and UK Research and Innovation (TLC Study, COV-LT-0013). The views expressed in this Correspondence are those of the authors and not necessarily those of the National Institute for Health Research or the Department of Health and Social Care. We thank the patients who advised us for this Correspondence.