A 6-year-old girl has become the youngest person known to die of COVID-19 in Florida. Eight children under the age of 18 years old have died of the virus in Florida, according to the health department's pediatric report. The child was a resident of Hillsborough County and died of coronavirus this week, the Florida Department of Health reported Friday. It is unknown if her case was travel-related or if she had contact with a known case of the virus. Since March, 47,489 Florida residents under the age of 18 have tested positive for the virus. Nearly 600 of those patients were hospitalized.