While the U.S. Centers for Disease Control and Prevention has long maintained on its website that those younger than 18 make up only 2% of cases, state data paints a much less rosy picture. California and Mississippi, for instance, are recording rates nearing 10% of overall cases. Florida has found that about a third of all children tested there are infected.

In response to questions from Bloomberg, the CDC cited a chart, updated today, with data from the states showing children make up 6.4% of those infected, though information isn’t included on almost 1 million cases. The numbers are rising, epidemiologists say, as testing has become more available to those with mild or no symptoms, encompassing many of the pediatric cases, and as those under 18 are increasingly involved in social activities…

Regional authorities are also seeing the surge. Harris County, Texas, where Houston is located, is an epicenter of the recent rise in U.S. cases. There, those younger than 20 made up 11.4% of about 49,000 cases, according to the county’s public health department. Children up to age 9 represented 4.1%.