A resurgence of polio? Experts fear a cautionary tale in measles

A resurgence of polio? Experts fear a cautionary tale in measles

Could the world see a resurgence of polio? Experts fear a cautionary tale in measles

By HELEN BRANSWELL

RIZWAN TABASSUM/AFP/GETTY IMAGES

For now, wild poliovirus is cornered in eastern Afghanistan and western Pakistan. But it is not magically corralled there.

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