A Pakistani health worker gives polio vaccine to a child in Peshawar, Pakistan.
A Pakistani health worker gives polio vaccine to a child in Peshawar, Pakistan. Mohammad Sajjad The Associated Press
A Pakistani health worker gives polio vaccine to a child in Peshawar, Pakistan. Mohammad Sajjad The Associated Press

Michael Gerson: Vaccine alliance benefits grow and needs shrink

December 18, 2014 09:00 AM

UPDATED December 18, 2014 06:55 PM

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