States easing virus restrictions despite experts' warnings

CDC chief: Variants mean keep guard up on virus
US advisers endorse single-shot COVID-19 vaccine from J&J
Experts recommend delaying mammogram after COVID shot
New COVID variant may be spreading rapidly in NYC
Health Beat: Vaccine Distribution Network
Heart damage a known concern after COVID infection
FDA says single-dose shot from J&J prevents severe COVID
Congress hears from drugmakers about vaccine production
Doctors: Don't let your guard down after vaccine
CDC: Strong evidence in-person schooling can be done safely