This blog was updated on 15 May 2019
Yemen is in the grip of an unprecedented cholera outbreak.
It is the largest and fastest-spreading epidemic since the World Health Organization began recording outbreaks in 1949. After the outbreak peaked in 2017, a second wave of cases began in August 2018 and has continued into 2019.
Since Cyclone Idai tore through southern Mozambique in March, there have been at least 6,596 cases of cholera. More than 90 health centres were either damaged or destroyed and sanitation facilities remain inadequate, making the situation very dangerous.
In this blog, British Red Cross health adviser Greg Rose explains the threat posed by this potentially life-threatening disease.