ORANGE COUNTY, Fla. – The state-run coronavirus testing site at the Orange County Convention Center is shifting to offering 15-minute rapid COVID-19 antigen tests only and also asking people to bring proof of insurance.Orange County Mayor Jerry Demings announced Monday the testing site, one of the busiest in the state, will now use the 15-minute rapid antigen tests only starting this week.Demings said the site is also asking people to bring proof of insurance if they have coverage in hopes of getting reimbursed for testing at some point.In early October, Florida began receiving 400,000 rapid coronavirus testing kits a week from the federal government.