But now she's giving one more reason to oppose the vaccine -- it causes mental retardation. Bachmann made the comment on the 'Today Show,' explaining the vaccine is 'potentially dangerous.'

The survey from The Atlantic reveals more than half of voters oppose the policy lead by Gov. Rick Perry that made the injections mandatory. Despite that approval, many don't agree with the Republican Congresswoman on her suggestion that the vaccine causes mental retardation.

Republican presidential candidate Michele Bachmann appeared as a guest on "The Tonight Show" with Jay Leno Friday. The Minnesota congresswoman talked about her recent controversial remarks about the HPV vaccine, gay marriage and Sarah Palin.

House Speaker John Boehner was asked Thursday about Rep. Michele Bachmann's assertions that an aide to Secretary of Hillary Clinton should be investigated for ties to Muslim extremists, and he called such accusations "dangerous." The remark comes as Bachmann is increasingly under fire for her comments from Republican colleagues.

The Associated Press says more skeptical parents are opting out of vaccinating their children, and health officials worry that could lead to a resurgence in illnesses they once considered defeated. The AP report says Minnesota has the third highest exemption rate in the country, with 6.5 percent of parents opting out.

The researchers combed through 31 studies and concluded the flu vaccine is effective for 59 percent of healthy adults. They called that inadequate but still encouraged people to get the shots, saying it's the best protection available.

The Minnesota Department of Health is encouraged by new numbers from federal officials regarding early childhood vaccinations. Data from 2011 in a new survey released by the Centers for Disease Control and Prevention indicates that an estimated 96 percent of Minnesota children ages 19 to 35 months were vaccinated for measles, mumps and rubella through last year, which the state says is better than the national average.