FDA Say Whooping Cough Vaccine Doesn’t Prevent Spread of Infection and Vaccinated Can Pass Infection to Unvaccinated

Based on an animal model, the study conducted by the U.S. Food and Drug Administration (FDA) and published November 25, 2013, in The Proceedings of the National Academy of Sciences, shows that acellular pertussis vaccines licensed by the FDA are effective in preventing the disease among those vaccinated, but suggests that they may not prevent infection from the bacteria that causes whooping cough in those vaccinated or its spread to other people, including those who may not be vaccinated.

Full announcement here:

http://www.fda.gov/NewsEvents/Newsroom/PressAnnouncements/ucm376937.htm