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

Title
Covid-19: Pfizer vaccine efficacy was 52% after first dose and 95% after second dose, paper shows
Authors
Keywords
-
Journal
BMJ-British Medical Journal
Volume -, Issue -, Pages m4826
Publisher
BMJ
Online
2020-12-12
DOI
10.1136/bmj.m4826

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