FLORIDA CITY, Fla. – Two new free coronavirus testing sites are opening this week in southern Miami-Dade County. Community Health of South Florida launched a COVID-19 testing site at Loren Roberts Park in Florida City that will be open Tuesdays and Thursdays from 10 a.m. to 1 p.m. The CHI Marathon Health Center at 2805 Overseas Highway in Marathon will conduct COVID-19 testing every Saturday from 11 a.m. to 12:30 p.m. by appointment only. Tuesday is the last day for COVID-19 testing at the Doris Ison Health Center at 10300 SW 216th St. According to a CHI news release, testing at the Doris Ison location will stop due to the new testing location down the street at the South Dade Government Center.