And there have been dozens of cases of wild polio in China and the Philippines this year, and a current outbreak of 84 cases in Pakistan, according to the WHO.

And there have been dozens of cases of wild polio in China and the Philippines this year, and a current outbreak of 84 cases in Pakistan, according to the WHO. http://www.who.int/csr/don/en/index.html http://www.who.int/csr/don/en/index.html