A child walks outside his family's shelter at Khamer displaced camp in Amran province, Yemen, March 21, 2020. In Amran province, northern Yemen, more than 5,000 displaced people live in hundreds of tents lined up as far as the eyes can see. They say inadequate sanitation and lack of healthcare make them vulnerable to deadly diseases, particularly if the novel coronavirus breaks out. (Photo by Mohammed Mohammed/Xinhua)