 Visceral Leishmaniasis, which is progressive and fatal if not treated, is an insidious, chronic disease that is characterized by irregular fever, anorexia, weight loss, cough, gross enlargement of the spleen and liver, mild anemia and emaciation. This may be preceded by rigors and vomiting. If untreated, Kala-azar, which is the most severe form of Leishmaniasis, has a mortality rate of nearly 100. 