Source: Pfizer planning to submit data on 4th Covid shot soon, while working on vaccine for all variants

France just opened up to vaccinated travelers – but only if your booster was received within 9 months. They have decided your booster expires at 9 months – thus, a new shot every 9 months is now mandated for international travelers.

By fall, I expect a 4th shot will be mandated or highly recommended here in the U.S., at least for say, over age 50 or 60. By 2023, I suspect they will call for annual Covid shots.

By EdwardM