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Polio Declared Emergency as Conflicts Fuel Virus Spread

The spread of polio to countries previously considered free of the crippling disease is a global health emergency, the World Health Organization said, as the virus once driven to the brink of extinction mounts a comeback.

Pakistan, Cameroon and Syria pose the greatest risk of exporting the virus to other countries, and should ensure that residents have been vaccinated before they travel, the Geneva-based WHO said in a statement today after a meeting of its emergency committee. It’s only the second time the United Nations agency has declared a public health emergency of international concern, after the 2009 influenza pandemic.