New York State health officials are investigating about 100 cases of a rare and dangerous inflammatory syndrome that afflicts children and appears to be connected to the coronavirus, Gov. Andrew M. Cuomo said on Tuesday. So far, three deaths in the state have been linked to the illness, which is known as pediatric multisystem inflammatory syndrome and causes life-threatening inflammation in critical organs, Mr. Cuomo said. More than half of the state’s pediatric inflammatory syndrome cases — 57 percent — involved children ages 5 to 14. The dead included a 5-year-old boy, who died last week in New York City; a 7-year-old boy in Westchester County and an 18-year-old girl on Long Island.

New York State health officials are investigating about 100 cases of a rare and dangerous inflammatory syndrome that afflicts children and appears to be connected to the coronavirus, Gov. Andrew M. Cuomo said on Tuesday. So far, three deaths in the state have been linked to the illness, which is known as pediatric multisystem inflammatory syndrome and causes life-threatening inflammation in critical organs, Mr. Cuomo said. More than half of the state’s pediatric inflammatory syndrome cases — 57 percent — involved children ages 5 to 14. The dead included a 5-year-old boy, who died last week in New York City; a 7-year-old boy in Westchester County and an 18-year-old girl on Long Island.