Understanding Autism, including how it is screened for and diagnosed: Centers for Disease Control and Prevention
This link on Autism Spectrum Disorder is part of a larger online resource provided by the Centers for Disease Control and Prevention (CDC) in the United States, where visitors to the site can find information on Diseases and Conditions from A-Z.
Under the health topic of Autism Spectrum Disorder (ASD), visitors to the site will find a comprehensive overview of ASD, including sections covering the basics of ASD, information on the different types of treatments and early intervention for ASD, as well as information on developmental screening and diagnostic tools for ASD. Additional sections of the site provide information on prevalence rates of ASD and key findings from scientific articles (including links to the article summaries). There is also a section that includes Free Materials on Autism Spectrum Disorder that visitors to the site can print or order.