The World Health Organization (WHO) has released new data on how autism rates are evolving.
The new data, which includes data from 2015 and 2016, found that more than half of children aged between two and four in the US and Europe now have an autism diagnosis, up from 45 percent in 2000.
In the US, the number of children diagnosed with autism has more than doubled since 2000.
The CDC data also shows that the rate of autism in children in the country has increased by more than 30 percent over that same period.
The CDC has released several estimates on the global rate of autistic children and adults, and a more comprehensive analysis is expected to be released in 2018.
In 2018, the CDC plans to release data on autism diagnosis rates in every country.
But autism is still a significant problem in the United States.
About one in 10 children diagnosed as autistic are diagnosed with other mental disorders, including ADHD, bipolar disorder, schizophrenia, or eating disorders.
A fifth of children with autism have also been diagnosed with ADHD.