GENEVA: The World Health Organization warned on Friday that cholera cases in Sudan are set to rise and could spread to neighboring countries, including Chad, which hosts hundreds of thousands of refugees from Sudan’s civil war in crowded conditions.

The more than two-year-old war between the Sudanese army — which took full control of Khartoum state this week — and the paramilitary Rapid Support Forces has spread hunger and disease and destroyed most health facilities. Drone attacks in recent weeks have interrupted electricity and water supplies in the capital, Khartoum, driving up cases there.

Dr. Shible Sahbani, WHO Representative for Sudan, called for humanitarian corridors and temporary ceasefires to allow mass vaccination campaigns against cholera and other disease outbreaks, such as Dengue fever and malaria.

“Our concern is that cholera is spreading,” Dr. Shible Sahbani, WHO Representative for Sudan, said in Geneva by video link from Port Sudan.

He said that cholera had reached 13 states in Sudan, including North and South Darfur, which border Chad, and that 1,854 people had already died in the latest wave as the dangerous rainy season sets in.