This morning, on my Facebook feed was a link that a young teenage woman was experiencing premature ovarian failure (early menopause) that may be caused by being vaccinated by Gardasil, the HPV vaccine. They (I assume the ones who wrote the article) are now accusing Merck & Co. of forgetting to research the effects of the vaccine on women's reproductive systems.
I'm not really sure if I believe this or not. It's only one case, as far as I know and that hardly shows anything. You have to actually buy the article on the British Medical Journal site if you want to see what was really written.