We don’t need universal booster shots. We need to reach the unvaccinated.

Many people are cheering the decision by the Food and Drug Administration last month to authorize coronavirus vaccine boosters for all adults 18 and over — a move that built on an earlier authorization for people over 65, those with underlying health issues and front-line workers. Commentators are hailing boosters as a key tool for getting the pandemic under control, and many public health experts are urging all American adults to get them. In response to incomplete data about the omicron variant, authorities are redoubling their booster recommendations, and the Centers for Disease Control and Prevention this past week advised additional doses for everyone 18 and older.