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Covid-19: Pfizer vaccine efficacy was 52% after first dose and 95% after second dose, paper shows

BMJ 2020; 371 doi: https://doi.org/10.1136/bmj.m4826 (Published 11 December 2020) Cite this as: BMJ 2020;371:m4826

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Article usage

Article metrics provide readers and authors with an indication of how often a specific article has been accessed month by month. It counts three formats - abstract/extract, full text and pdf. The page is updated each day.

Usage statistics: December 2020 to May 2022

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AbstractFullPdf
Dec 20202221495323488
Jan 20214804221506586
Feb 20211531570091740
Mar 20211441602921732
Apr 202193996811272
May 20215243886993
Jun 20212027733658
Jul 20211916746557
Aug 20213210477514
Sep 2021166731364
Oct 2021164803324
Nov 202194167317
Dec 2021143001238
Jan 202262284143
Feb 202271390106
Mar 202201043126
Apr 20223969116
May 2022881548
Total1294111270919322