Here's a CDC page on it: http://www.cdc.gov/mmwr/preview/mmwrhtml/00046738.htm http://www.cdc.gov/mmwr/preview/mmwrhtml/00046738.htm As you'll see, it discuss

Here's a CDC page on it: http://www.cdc.gov/mmwr/preview/mmwrhtml/00046738.htm http://www.cdc.gov/mmwr/preview/mmwrhtml/00046738.htm As you'll see, it discusses various studies and provides links to papers examining various cases in which people have had an adverse side-effect to a vaccine. Please, everyone, no comments about how that may be true but what about this and that and the other; the poster asked for a link, here it is.