The CDC came out with an autism prevalence estimate a few days ago. There have been a number of news stories on the subject and the usual attempts by credulous websites to use this to claim that vaccines cause autism.
It’s right there at the top, in the interpretations section of the abstract:
Read more here at Left Brain, Right Brain,Because the ADDM sites do not provide a representative sample of the entire United States, the combined prevalence estimates presented in this report cannot be generalized to all children aged 8 years in the United States
