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A health worker gives a polio vaccine to a child during a vaccination campaign in Ghazni province, eastern Afghanistan, Feb. 18, 2019. (Xinhua/Sayed Momizadah)
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A health worker gives a polio vaccine to a child during a vaccination campaign in Ghazni province, eastern Afghanistan, Feb. 18, 2019. (Xinhua/Sayed Momizadah)
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