Dr. Tenpenny is a contributing author: Vaccine Epidemic: How Corporate Greed, Biased Science, and Coercive Government Threaten Our Human Rights, Our Health, and Our Children
How Independent Are Vaccine Defenders?
For years some parents and scientists have raised concerns about vaccine safety, including a possible link to autism and ADD. Many independent experts have sided with government officials and other scientists who say there's no possible connection.
But how "independent" are they? CBS News investigative correspondent Sheryl Attkisson shares here's what she found.