@article{Bernal_J-2021_33376,
title = {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},
author = {Bernal, J. and Andrews, N. and Gower, C. and Robertson, C. and Stowe, J. and Tessier, E. and Simmons, R. and Cottrell, S. and Roberts, R. and O'Doherty, M. and Brown, K. and Cameron, C. and Stockton, D. and McMenamin, J. and Ramsay, M.},
month = {may},
year = {2021},
abstract = {ObjectiveTo estimate the real world effectiveness of the Pfizer-BioNTech BNT162b2 and Oxford-AstraZeneca ChAdOx1-S vaccines against confirmed covid-19 symptoms (including the UK variant of concern B.1.1.7), admissions to hospital, and deaths.},
volume = {373},
issue = {8292},
journal = {BMJ},
publisher = {British Medical Association},
url = {https://doi:10.1136/bmj.n1088 },
}
