All coverage
Is Vaccine Immunity Waning?
By David Leonhardt
Why the Pfizer-BioNTech Covid-19 Vaccine Is Called Comirnaty
By Elizabeth Gamillo
Big Cities Drop Vaccine Requirements as COVID Cases Fall
By Peter Butler & Katie Teague
Nearly 1 million Covid booster shots have already been administered in the U.S., CDC data shows
By Berkeley Lovelace & Berkeley Lovelace Jr.