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A Nepalese kid learns to wash his hands during an event to mark Global Handwashing Day at Bansighat, a slum area in Kathmandu, Nepal, Oct. 15, 2018. (Xinhua/Sunil Sharma)

A Nepalese kid learns to wash his hands during an event to mark Global Handwashing Day at Bansighat, a slum area in Kathmandu, Nepal, Oct. 15, 2018. (Xinhua/Sunil Sharma)