Pfizer, BioNTech find updated COVID booster protects against Omicron in trial
By Ludwig Burger & Manas Mishra
COVID bivalent booster for kids under 12 authorized by FDA
By Karen Weintraub
How much better are updated COVID boosters? Pfizer announces first results in human clinical trial
By Alexander Tin
Updated Covid-19 booster shots expanded to children as young as 5
By Jamie Gumbrecht