Vaccine Makers to Update Boosters to Target Omicron Subvariants

The FDA announced has asked vaccine makers to update their COVID booster shots to target the Omicron subvariants known as BA.4 and BA.5.
photo of medical researcher using microscope

The FDA announced has asked vaccine makers to update their COVID booster shots to target the Omicron subvariants known as BA.4 and BA.5.