TY - JOUR T1 - Trends and clinical characteristics of COVID-19 vaccine recipients: a federated analysis of 57.9 million patients’ primary care records <em>in situ</em> using OpenSAFELY JF - British Journal of General Practice JO - Br J Gen Pract SP - 10 LP - 10 DO - 10.3399/bjgp22X718049 VL - 72 IS - 714 AU - Brian MacKenna AU - Helen J Curtis AU - Alex J Walker AU - Ben Goldacre AU - All OpenSAFELY study authors Y1 - 2022/01/01 UR - http://bjgp.org/content/72/714/10.abstract N2 - All letters are subject to editing and may be shortened. General letters can be sent to bjgpdisc@rcgp.org.uk (please include your postal address for publication), and letters responding directly to BJGP articles can be submitted online via eLetters. We regret we cannot notify authors regarding publication.For submission instructions visit: bjgp.org/lettersOur paper in the BJGP1 describes COVID-19 vaccine coverage in the first 100 days of the NHS vaccination campaign in England on 57.9 m people, with detailed data on vaccination rates in specific clinical and demographic subgroups. As COVID-19 is an unprecedented and evolving situation we have developed a … ER -