Polio a world crisis, WHO says

Spread from three countries called a threat to eradication try

Posted: May 6, 2014 at 4:36 a.m.

A Pakistani health worker gives a child a polio vaccine in Lahore, Pakistan, Monday, May 5, 2014. For the first time, the World Health Organization on Monday declared the spread of polio an international public health emergency that could grow in the next few months and unravel the nearly three-decade effort to eradicate the crippling disease. (AP Photo/K.M. Chaudary)

PARIS — Alarmed by the spread of polio from conflict zones, the World Health Organization declared an international health emergency on Monday in an effort to contain the paralyzing virus, which officials thought two years ago had been nearly eradicated.

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Front Section, Pages 6 on 05/06/2014