Yemenis gather in front of a graffiti wall as activists draw anti-cholera graffiti during a campaign in Sanaa, Yemen, on May 23, 2017. According to the latest statistics released by the Yemeni Ministry of Health on Sunday, a total of 315 people died in the last three weeks from the cholera epidemic, and suspected cases have increased up to 29,000 cases in 18 of Yemen's 23 provinces since April 27. (Xinhua/Mohammed Mohammed)
