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A health worker gives anti-polio drops to a child during anti-polio campaign in northwest Pakistan's Peshawar, on Nov. 14, 2018. (Xinhua/Umar Qayyum)
A health worker gives anti-polio drops to a child during anti-polio campaign in northwest Pakistan's Peshawar, on Nov. 14, 2018. (Xinhua/Umar Qayyum)