Polio-Free Countries Still Face Threat, Scientists Say

By Bahar Gholipour, Staff Writer Published: 11/20/2013 05:03 PM ESTon LiveScience An outbreak of polio in a previously polio-freeregion of China shows that the crippling, potentially deadlydisease will remain a global threat as long as the polioviruscirculates anywhere in the world, scientists say. Researchers whoinvestigated the outbreak of polio in the Chinese province ofXingjian in 2011 found the infection was caused by a poliovirusthat originated in Pakistan, according to the study published today(Nov. 20) in The New England Journal of Medicine. ...

via Health News Headlines - Yahoo! News http://www.huffingtonpost.com/2013/11/21/polio-free-countries_n_4317043.html?ncid=txtlnkusaolp00000592