Next on FDA's agenda: Booster shots of Moderna, J&J vaccines
By Lauran Neergaard & Matthew Perrone
White House tells states to prepare for Covid vaccinations in young children
By Shannon Pettypiece
U.S. FDA staff says Moderna did not meet all criteria for COVID-19 boosters
By Michael Erman & Julie Steenhuysen
A primer on what we know about mixing and matching Covid vaccines
By Helen Branswell
Fully Vaccinated and Had Covid-19? No Rush for a Booster Shot, Experts Say
By Felicia Schwartz
U.S. will accept WHO-approved COVID-19 vaccines for international visitors
By David Shepardson