Scientific advisers to the Centers for Disease Control and Prevention are meeting tomorrow to decide which Americans should get COVID-19 booster shots and when. The decision will be closely watched after advisers to the Food and Drug Administration on Friday overwhelmingly rejected a proposal to offer Pfizer booster shots to all Americans over the age of 16 and then unanimously voted in favor of third doses for those over 65 and some high risk groups. The experts confirmed that a third dose does boost antibody levels, although it’s unclear how long that increase lasts or whether it translates to a meaningful boost in protection against severe disease.
