A few hours after the FDA authorized a fourth dose of the Moderna and Pfizer-BioNTech COVID-19 vaccines, one of its top experts hinted that a fifth dose may be on its way in the fall.
“I don’t want to shock anyone, but there may be a need for people to get an additional booster in the fall,” Peter Marks, the director of the FDA’s Center for Biologic Evaluation and Research, said in a virtual session with reporters on Tuesday afternoon.
Marks said that an FDA advisory committee will discuss the matter next week. If another booster is authorized in the fall, it could be one that is tweaked to defend against a particular coronavirus variant or a mixture of variants, he added.
“It’s not actually clear yet what the optimal booster should be,” Marks said.