That is no excuse.
If a woman had told Bachmann that Gardisil caused her daughter to spontaneously explode, would you have excused her for repeating the claim? Repeating lies and misinformation does not absolve you of responsibility simply because you're repeating something you heard.
I'll grant you that Bachmann may very well be just extremely ignorant, but that doesn't give you absolution to run around and repeat every asinine claim that you hear.
Bachmann should be ashamed of herself.
Then you have NO excuse for writing a lying accusation as if you are judge, jury, and executioner... And the luddites worry about little church ladies poking holes in their 'fittest' will survive dogma, while ignoring all the mutations they claim demonstrates progression of life... See now none of the luddites will admit that there is NO 100% certainty that at any give time a mutation maybe, possibly, probably will take place and this 'save' the girls will have NO affect.