Choice of Technique for Creating Tsetse-Free Zones in Africa: The Cost Dimension
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African trypanosomiasis, the parasitic disease caused by trypanosomes transmitted by tsetse flies to people and their livestock throughout much of sub-Saharan Africa, is widely recognised as having had a major impact on the development of the continent, in particular on the distribution of its livestock and, sometimes, its human, populations. Today it continues to cause epidemics in human populations, where the disease is always fatal if left untreated, and to leach away the resources of Africa’ s livestock keepers, obliging them to spend substantial sums on trypanocides to prevent or treat the disease, while still lowering livestock productivity, increasing their death rates and limiting the use of animal traction.