Research
Effectiveness of the Pfizer-BioNTech and Oxford-AstraZeneca vaccines on covid-19 related symptoms, hospital admissions, and mortality in older adults in England: test negative case-control study
BMJ 2021; 373 doi: https://doi.org/10.1136/bmj.n1088 (Published 13 May 2021) Cite this as: BMJ 2021;373:n1088Read our latest coverage of the coronavirus pandemic
Linked Editorial
Effectiveness of England’s initial vaccine roll out
