More than a million people across at least 17 countries have been affected, said Elisabeth Byrs of the United Nations Office for the Coordination of Humanitarian Affairs. People need clean water after their normal sources were contaminated, and emergency food and shelter after fields and houses were washed away. “The rains are set to continue, and we are really concerned about the situation because a lot of people are homeless, and infectious diseases could emerge,” Byrs said by phone from Geneva. It is difficult to say how much rain has fallen; few African countries have meteorological services, and those that do only offer forecasting, lacking the staff and infrastructure to track weather in remote areas. Governments say tens of thousands need aid in Kenya and Ethiopia, which was devastated by flooding last year as well. In Sudan, refugees who had just returned at the end of a brutal civil war had to flee their homes again through waist-high waters in what the government called “the worst floods in living memory.” So far, 119 people have died and tens of thousands been made homeless since the flooding began in mid-June, but the figure may be higher as much of its vast swampland is inaccessible except by air. French military helicopters from the peacekeeping mission in nearby Ivory Coast, which has also been affected, have been deployed to help airlift government-provided food and medical supplies to the needy. In Burkina Faso, Amade Belem, who heads the country’s national emergency management agency, said maize and millet farms were ruined. In the oil giant of Nigeria, 68 people have died and 50,000 are affected, according to the Red Cross. Even the desert nations of Niger, Mali and Mauritania have been hit.160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set! WEATHER: Hundreds of thousands have been left homeless. U.N. says rains also could bring disease. By Katy Pownall THE ASSOCIATED PRESS KAMPALA, Uganda – Torrential downpours and flash floods across Africa have submerged whole towns and washed away bridges, farms and schools. This summer’s rains have killed at least 150 people, displaced hundreds of thousands and prompted the United Nations to warn Saturday of a rising risk of disease outbreaks. In eastern Uganda, nine people have been reported killed and 150,000 have been made homeless since early August. Another 400,000 – mainly subsistence farmers – have lost their livelihoods after their fields were flooded or roads washed away, and the rains are forecast to worsen in the next month. “The problem is getting worse by the hour,” said Uganda’s Minister for Relief and Disaster Preparedness Musa Ecweru, who spent Saturday viewing the affected areas by plane. “Access to some communities is almost impossible. We will need boats and helicopters to deliver emergency interventions,” he added. “In some places, the water is the same color as the earth, so when you look at it, you think it is a field. Then you realize it’s water,” Ecweru said. On the other side of the continent, Ghana in west Africa has also been heavily hit. Three regions in the north, the country’s traditional breadbasket, have been declared an official disaster zone after whole towns and villages were submerged. Torrential rains between July and August killed at least 18 people and displaced a quarter of a million, Information Minister Oboshie-Sai Cofie said Saturday. “It is a humanitarian disaster. People have nowhere to go. Some of them are just hanging out there waiting for help to come at a point,” Cofie said. The Ghanian government had received considerable aid, she said.