Dr. Harriet Hall wrote in e-skeptic about all of the Republican Candidates’ attitudes toward vaccines and autism.
“These attitudes are bad enough coming from the scientifically illiterate, but it is shocking that two of the candidates are medical doctors whose education should have given them a more science-based approach. Worse, Carson is a creationist who has rejected some of the fundamental tenets of Darwinian evolution as “incredible fairy tales,” has claimed that mutations only lead to degeneration rather than improvement, and has claimed that there are no intermediate species. As the world faces current and future challenges like climate change and epidemic infectious diseases, a solid understanding of science will be essential to making rational political decisions. The GOP debate was not grounds for optimism."
http://www.skeptic.com/eskeptic/15-09-23/