A cholera outbreak in Angola has killed over 150 people in four provinces since being identified in February. Aid groups warn the outbreak is spreading.
Slums without running water are at high risk from cholera
Medecins Sans Frontieres says it has treated 2,500 cases in the capital, Luanda. Most deaths have been in other provinces that lack health facilities.
Cholera is spread primarily by contact with contaminated water or food.
Most Luanda homes lack running water and sewerage, after millions flocked to the city during 27 years of war.
Bengo, Benguela and Kwanza Norte provinces are also affected, with a total of 3,300 cases identified countrywide.
MSF said almost 500 people had arrived in the past 48 hours at the three cholera treatment centres which the organisation is running in Luanda.
"All of our centres are running at maximum capacity," MSF's head of mission in Angola, Richard Veerman, said in a statement.
MSF, which plans to open a fourth treatment centre in the capital, called on the Angolan authorities to provide more resources to contain the outbreak.
The United Nations Children's Fund (Unicef) also said the problem was not under control.
"There has not been a huge number of deaths yet, but more needs to be done," Unicef senior programme officer Akhil Iyer told Reuters news agency. "More money is needed."