WHO guidance on COVID-19 vaccine trial designs in the context of authorized COVID-19 vaccines and expanding global access: Ethical considerations

Vaccine. 2022 Mar 25;40(14):2140-2149. doi: 10.1016/j.vaccine.2022.02.038. Epub 2022 Feb 28.

Abstract

While the degree of COVID-19 vaccine accessibility and uptake varies at both national and global levels, increasing vaccination coverage raises questions regarding the standard of prevention that ought to apply to different settings where COVID-19 vaccine trials are hosted. A WHO Expert Group has developed guidance on the ethical implications of conducting placebo-controlled trials in the context of expanding global COVID-19 vaccine coverage. The guidance also considers alternative trial designs to placebo controlled trials in the context of prototype vaccines, modified vaccines, and next generation vaccines.

Keywords: Placebo-controlled trials; Research ethics; Standard of care; Standard of prevention; Trial designs.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • COVID-19 Vaccines
  • COVID-19* / prevention & control
  • Humans
  • SARS-CoV-2
  • Vaccines*
  • World Health Organization

Substances

  • COVID-19 Vaccines
  • Vaccines