New Covid Vaccines Targeting Variants Are Weighed for Fall Booster Campaign

Advisers to U.S. health regulators are meeting Tuesday to consider whether and how Covid-19 vaccines should be updated to better target circulating variants of the coronavirus, in preparation for a fall booster-shot campaign.

The advisory panel to the Food and Drug Administration, which includes doctors and public-health specialists, is expected to vote later in the day on whether to recommend updating Covid-19 vaccines to target the Omicron variant.