Understanding the Debate Over Covid Booster Shots: QuickTake

With the especially contagious delta variant threatening efforts to end the pandemic, a growing number of wealthy countries are planning to or considering administering booster shots of Covid-19 vaccines, at least to particularly vulnerable groups. U.S. regulators said Sept. 22 that people 65 and over and others at high risk of severe Covid or Covid complications can receive a third dose of the Pfizer Inc.-BioNTech SE vaccine. Officials at the World Health Organization have characterized the wide rollout of boosters in wealthier countries as unethical as long as poorer countries still lack supplies to cover significant portions of ...