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Yemeni children line up to be inoculated against schistosomiasis on the outskirts of Sanaa, Yemen, on Dec. 16, 2019. (Photo by Mohammed Mohammed/Xinhua)
Yemeni children line up to be inoculated against schistosomiasis on the outskirts of Sanaa, Yemen, on Dec. 16, 2019. (Photo by Mohammed Mohammed/Xinhua)