COVID-19 testing sites see spike in number of people needing tests A spokesperson for the Duval County Health Department said they're testing 300-400 people per day. That number has spiked in the past two weeks. Author: Kailey Tracy Updated: 7:27 PM EDT July 23, 2021 JACKSONVILLE, Fla. — Friday, hundreds of people waited in line to get tested for COVID-19, some for a few hours, at the Duval County Health Department's site downtown. The line at the health department's Central Health Plaza site wrapped around the building for most of the day. A spokesperson for the site said they've seen an increase in testing over the past two weeks. They're currently testing 300 to 400 people per day.