Recording of ’COVID-19 vaccine declined‘: a cohort study on 57.9 million National Health Service patients’ records in situ using OpenSAFELY, England, 8 December 2020 to 25 May 2021 Curtis, Helen J and Inglesby, Peter and MacKenna, Brian and Croker, Richard and Hulme, William J and Rentsch, Christopher T and Bhaskaran, Krishnan and Mathur, Rohini and Morton, Caroline E and Bacon, Sebastian CJ and Smith, Rebecca M and Evans, David and Mehrkar, Amir and Tomlinson, Laurie and Walker, Alex J and Bates, Christopher and Hickman, George and Ward, Tom and Morley, Jessica and Cockburn, Jonathan and Davy, Simon and Williamson, Elizabeth J and Eggo, Rosalind M and Parry, John and Hester, Frank and Harper, Sam and O’Hanlon, Shaun and Eavis, Alex and Jarvis, Richard and Avramov, Dima and Griffiths, Paul and Fowles, Aaron and Parkes, Nasreen and Evans, Stephen JW and Douglas, Ian J and Smeeth, Liam and Goldacre, Ben, Eurosurveillance, 27, 2100885 (2022), https://doi.org/10.2807/1560-7917.ES.2022.27.33.2100885