Papua New Guinea scrambles to vaccinate as polio returns

MOUNT HAGEN, Papua New Guinea -- Decades after polio was eradicated from Papua New Guinea, the crippling and sometimes deadly disease has returned, leaving doctors scrambling to revive long-lapsed vaccination programs.   Until earlier this year, the polio virus was endemic in only three countries in the world: Afghanistan, Nigeria and Pakistan.   But a relatively rare strain is now spreading throughout rugged, jungle-cloaked Papua New Guinea, one of the world's poorest countries.   Since the first case was detected in April -- paralyzing a six-year-old boy named Gafo near the northern coast -- polio has infected dozens more nationwide, prompting the g...

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