True Story Behind Typhoid Mary | Dark Matters

For full episodes of Dark Matters, visit http://www.youtube.com/user/sciencefullepisodes The real "Typhoid Mary" was an Irish immigrant who worked as a cook in well to do American households. Though she was connected to several outbreaks of the disease, she never fell ill herself. | For more Dark Matters, visit http://science.discovery.com/tv/dark-matters/#mkcpgn=ytsci1 Subscribe to Science Channel! | http://www.youtube.com/subscription_center?add_user=sciencechannel