The New York Times
The condition, which usually emerges several weeks after infection, is still rare, but can be dangerous. … Doctors across the country have been seeing a striking increase in the number of young people with … Multisystem Inflammatory Syndrome in Children or MIS-C. Even more worrisome, they say, is that more patients are now very sick than during the first wave of cases, which alarmed doctors and parents around the world last spring.