A cholera outbreak in war-torn Yemen is a threat to millions living in desperate conditions. More than 100,000 people have fallen ill in the past month.

Two years of war are already putting a huge strain on hospitals, and thousands of cholera victims cannot get treatment.

The international charity group Oxfam says the disease is killing one person an hour.

Al Jazeera's Bernard Smith reports.

Middle East, Yemen, War & Conflict