No specific treatment for the disease is yet available. Efforts to help those who are infected are supportive and include giving either oral rehydration therapy(slightly sweet and salty water to drink) or intravenous fluids. The disease has a high risk of death, killing between 50% and 90% of those infected with the virus. EVD was first identified in Sudan (now South Sudan) and the Democratic Republic of the Congo. The disease typically occurs in outbreaks in tropical regions of sub-Saharan Africa.