In the UK, where I live, covid boosters have been offered only to vulnerable groups for a while now. I should start by saying that covid vaccines have been a remarkable success story. That’s the argument being made by FDA head Marty Makary and Vinay Prasad, director of the agency’s Center for Biologics Evaluation and Research. Makary has long been accused of downplaying the benefits of covid vaccines. In fact, they seem pretty measured: Annual covid booster shots will continue to be approved for vulnerable people but will have to be shown to benefit others before people outside the approved groups can access them.