Three New York children have died from pediatric multi-symptom inflammatory syndrome tied to COVID-19 since the pandemic began, Gov. Andrew Cuomo said Saturday.A 7-year-old boy from Westchester County died late last week, the county confirmed on Friday. A 5-year-old boy died earlier in the week from the same syndrome at Mount Sinai Kravis Children’s Hospital in New York City. Cuomo did not give any details about the third New York child on Saturday.“We still have a lot to learn about this virus and every day is another eye-opening situation,” he said, adding that the emergence of the illness was “truly disturbing.”The childhood ailment has affected at least 73 children in New York state and authorities are now looking for other potential cases across the country. Cases have also been reported in Washington, D.C., California, Delaware, Louisiana, Massachusetts, Pennsylvania, Washington state and New Jersey, where a 4-year-old died with symptoms last month. Is the Key to Beating COVID-19...