Placebo-Controlled Trials of Covid-19 Vaccines — Why We Still Need Them

New England Journal of Medicine
January 14, 2021 Vol. 384 No. 2
http://www.nejm.org/toc/nejm/medical-journal

 

Perspective
Placebo-Controlled Trials of Covid-19 Vaccines — Why We Still Need Them
WHO Ad Hoc Expert Group on the Next Steps for Covid-19 Vaccine Evaluation
This article was published on December 2, 2020, at NEJM.org.