Less than 10% of children ages 5 to 11 are fully vaccinated against Covid-19 in half of the U.S. counties.

In about half of US counties, less than 10% of children 5 to 11 are fully vaccinated, according to a CNN analysis of data from the US Centers for Disease Control and Prevention.

Most of the counties with especially child low vaccination rates are in the South, where nearly two-thirds of counties have vaccinated fewer than 1 in 10 children ages 5 to 11.

"This has been a constant concern for all of us," said Dr. Yvonne Maldonado, chair of the American Academy of Pediatrics Committee on Infectious Diseases. "It's very disturbing to see that families just haven't embraced [vaccination]."

About 1,500 counties have less than 10% of this age group vaccinated, including more than 500 counties that have less than 5% of this age group vaccinated, according to CNN's analysis. ...