Yemen's cholera epidemic 'largest ever recorded'
21 July 2017 Last updated at 17:20 BST
The number of people with cholera in Yemen is now the largest ever recorded in any country in a single year since records began, Oxfam said.
Nearly 2,000 people have died since the disease was discovered in the country three months ago.
The BBC gained a rare access to an area where the outbreak originates.