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Waning effectiveness of BNT162b2 and ChAdOx1 covid-19 vaccines over six months since second dose: OpenSAFELY cohort study using linked electronic health records.
Horne EMF, Hulme WJ, Keogh RH, Palmer TM, Williamson EJ, Parker EPK, Green A, Walker V, Walker AJ, Curtis H, Fisher L, MacKenna B, Croker R, Hopcroft L, Park RY, Massey J, Morley J, Mehrkar A, Bacon S, Evans D, Inglesby P, Morton CE, Hickman G, Davy S, Ward T, Dillingham I, Goldacre B, Hernán MA, Sterne JAC. Horne EMF, et al. Among authors: walker v, walker aj. BMJ. 2022 Jul 20;378:e071249. doi: 10.1136/bmj-2022-071249. BMJ. 2022. PMID: 35858698 Free PMC article.
425 results