The aid group Doctors Without Borders says the United Nations South Sudan mission has refused to improve living conditions by moving to safer grounds 21,000 displaced people living at a UN base.
Doctors Without Borders said today the decision by senior UN personnel is a "shocking display of indifference" to refugees who could be exposed to waterborne diseases and potential epidemics.
The aid group said it questions the UN's commitment to meeting the needs of the country's most vulnerable people.
The group said upcoming seasonal rains will endanger the refugees. It wants the refugees moved to higher grounds less affected by floods.
The UN spokeswoman in South Sudan, Arianne Quentier, said the UN is aware of the dangers at the camp and that people are being moved out.
