N'DJAMENA, June 12 (Reuters) - Thousands of Sudanese refugees who fled to Chad to escape fighting in their country could be cut off from humanitarian and medical aid during the approaching rainy season, medical charity Medecins Sans Frontieres (MSF) said on Monday. Rains will also bring a higher risk of waterborne and infectious diseases given poor access to clean water and sanitation, she said. Nearly 30,000 refugees are in Sila, where they lack shelter, water and food due to deficiencies in humanitarian assistance. One of the poorest countries in the world, Chad was already hosting close to 600,000 refugees before the latest Sudanese crisis. This has caused food and commodity prices to soar in areas already suffering from high levels of malnutrition, MSF said.

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Persons: MSF's, Audrey van der Schoot, Rains, Chad, Mahamat, Sofia Christensen, Mark Heinrich Our Organizations: United Nations, MSF, UNHCR, Thomson Locations: N'DJAMENA, Chad, Sudan, Sila, Central