The condition, called pediatric multisystem inflammatory syndrome, has been reported in about 100 children in New York State, including three who died, Gov. Andrew M. Cuomo said this week. Cases have been reported in other states, including Louisiana, Mississippi and California, and the Centers for Disease Control and Prevention has said it will soon issue an alert asking doctors to report cases of children with symptoms of the syndrome.
In the new study, published on Wednesday in the journal Lancet, doctors in Italy compared a series of 10 cases of the illness with cases of a similar rare condition in children called Kawasaki disease.
The authors found that over the five years before the coronavirus pandemic — January 2015 to mid-February 2020 — 19 children with Kawasaki disease were treated at the Papa Giovanni XXIII Hospital, which has an advanced pediatric department, in the Bergamo province.