A page of the Centers for Disease Control and Prevention's website was changed to include a false claim about autism and vaccines.

The Centers for Disease Control and Prevention has made a dramatic about-face in the agency's position on the relationship between vaccines and autism.

Dr. Demetre Daskalakis, a former top CDC official who resigned as head of the National Center for Immunization and Respiratory Diseases earlier this year following the ouster of Susan Monarez as agenc...