CNN Officials in states across the South are warning that more young people are testing positive for coronavirus. Greg Abbott said last week that people under 30 made up a majority of new coronavirus cases in several counties. Ron DeSantis said Friday that the median age was 37 for newly diagnosed coronavirus cases over the last week. From the beginning of the pandemic up through May 30, the median age of positive coronavirus cases was 48, the CDC said. One recommends people wear masks when they leave their home.