In this photo from files taken on Thursday, June. 29, 2017, a man is treated for a suspected cholera infection at a hospital in Sanaa, Yemen. The World Health Organization's emergencies chief, Dr. David Salama, said Tuesday, Oct. 3, 2017 that the agency could have acted faster and sent more vaccines to fight a massive, deadly surge of cholera cases in war-battered Yemen this year. (AP Photo/Hani Mohammed, File)
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