The Biden administration’s plan to start rolling out Covid-19 booster shots next week has drawn criticism from some who claim there’s not enough evidence to show they’re needed. While breakthrough infections among the fully vaccinated have increased, most of those cases aren’t severe. The purpose of vaccines, say booster critics, is to prevent hospitalizations and deaths, not cold-like symptoms.
But many fully vaccinated people in recent months have reported getting severely sick with Covid, though not to the point of needing hospitalization. Boosters should help reduce the number of such cases. They could also prevent people from experiencing certain complications that sometimes follow a severe case of Covid.