Waning effectiveness of BNT162b2 and ChAdOx1 COVID-19 vaccines over six months since second dose
Waning effectiveness of BNT162b2 and ChAdOx1 COVID-19 vaccines over six months since second dose: a cohort study using linked electronic health records
How to cite: Elsie MF Horne, William J Hulme, Ruth H Keogh, Tom M Palmer, Elizabeth J Williamson, Edward PK Parker, Amelia Green, Venexia Walker, Alex J Walker, Helen Curtis, Louis Fisher, Brian MacKenna, Richard Croker, Lisa Hopcroft, Robin Y Park, Jon Massey, Jessica Morley, Amir Mehrkar, Sebastian Bacon, David Evans, Peter Inglesby, Caroline E Morton, George Hickman, Simon Davy, Tom Ward, Iain Dillingham, Ben Goldacre, Miguel A Hernán, Jonathan AC Sterne medRxiv 2022.03.23.22272804; doi: https://doi.org/10.1101/2022.03.23.22272804