FDA Tells Covid Vaccine Makers to Tailor Boosters to Omicron

The US Food and Drug Administration advised vaccine manufacturers to develop Covid-19 boosters tailored to the currently circulating omicron variants for new shots that could be ready as soon as this fall.

The decision follows an advisory committee vote this week to recommend updating the vaccine boosters in response to the evolving characteristics of the virus that causes Covid. It paves the way for manufacturers like Pfizer Inc., Moderna Inc. and Novavax Inc., once authorized, to incorporate omicron-specific elements into their booster doses.

“As we move into the fall and winter, it is critical that we have safe ...