What scientists are learning about kids and Covid-19 infection

Several new studies are deepening our understanding of infection and transmission in kids, but there’s still a lot we don’t know.

In mid-June, a sleepaway camp in Georgia opened for its first camp session of the summer, welcoming 363 campers and 234 staffers and trainees back for what was supposed to be a fun summer outdoors. The camp followed most of the Centers for Disease Control and Prevention (CDC) guidelines, including keeping campers in cabin groups as much as possible. But the campers were not required to wear masks for...