American children with COVID-19 are hospitalized infrequently compared to adults, but the rate has been growing and about a third of those hospitalized in a subset of a federal study published Friday needed intensive care.

The study by the U.S. Centers for Disease Control and Prevention analyzed pediatric hospitalization data for 576 cases in 14 states. It found that about eight children are hospitalized for every 100,000 infected, compared with more than 164 adults per 100,000.

But between March and July, the hospitalization rates of children increased steadily, with Black and Latino children hospitalized at a higher rate. Among 208 hospitalized children with complete medical chart reviews, a third were admitted to an intensive care unit. One died and 12 needed invasive ventilation.