David Kirby
Posted February 25, 2009 08:29 PM (EST)

A major health official within the United States Government today endorsed more research into possible links between vaccination and autism, saying that such studies are "legitimate."
The official, Dr. Duane Alexander, Director of the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), an NIH agency, said scientists must investigate susceptible subpopulations of children, including kids with mitochondrial disorders and those who have trouble metabolizing mercury.