The Biden administration announces that, beginning on September 20, the U.S. will begin administering booster shoots of the Moderna and Pfizer–BioNTech vaccines for most people who received their second dose at least eight months ago. (Business Insider) COVID-19 pandemic in the United States, COVID-19 vaccination in the United StatesCOVID-19 pandemic in North AmericaCOVID-19 pandemic link embed save