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In Africa, it is estimated that trypanosomiasis occurs in more than 37 Sub-Saharan countries covering more than a third of Africa's total area. The infection threatens an estimated 60 million people and about 50 million cattle. According to the World Health Organization (WHO, 2002), estimation about 500,000 new cases of human infection and 3 million deaths in cattle occur every year. The economic losses in cattle production alone are estimated to be about 1.2 billion U.S dollars a year. If this figure were extrapolated to the whole tsetse infested land, the total losses in terms of...