Dr. Irwin Redlener, director of the National Center for Disaster Preparedness at Columbia University and an expert on U.S. readiness for pandemics, called it a “delusion of normalcy” to see gradual reopenings as an indication that any community—from New York to Washington—is out of the woods. But to be fair, said Redlener, “risky behavior in younger people is always a public health issue.”

That gamble is made worse by the recent reports that have shown, for children under 18, the potentially fatal multisystem inflammatory syndrome related to COVID-19.