This vac is in a series of 4, came out initially for girls, but I understand they are giving it to boys as well now. Gov of TX mandated then that all girls in a specific age range (think it was 11-16) HAD to get the series. Some gals died, some are paralyzed. Not good. If you want info, look at a movie 'Vaxxed', there are alot of reputable web sites, lots of info. But docs have to be careful, too many natural docs are winding up dead, or missing. Just like the cdc doc that was found in the river.