The study, published on Wednesday in the journal JAMA, analyzed 1,116 cases of young people who were treated at 66 hospitals in 31 states. Slightly more than half the patients had acute Covid-19 … while 539 patients had the inflammatory syndrome that has erupted in some children weeks after they have had a typically mild initial infection. … Young people with the syndrome, called [MIS-C], were more likely to be between 6 and 12 years of age, while more than 80 percent of the patients with acute Covid-19 were either younger than 6 or older than 12. More than two-thirds of patients with either condition were Black or Hispanic…