ABSTRACT
Tsetse flies play today, as they always have, an unquestionably important and harmful role as a vector for disease, both of man and of livestock. The damage regularly suffered by a large number of African countries from this cause is very large. In practice, the epidemiology of this protozoal disease is closely linked to the behaviour of the bloodsucking vector flies, wild species which play an important economic role in this context, by reason of their influence on conditions of life in vast agricultural and pastoral regions. The campaign against trypanosomiasis has taken several forms: detection of flagellated protozoa in an organism and then intervention with pharmacological products, vaccination, selection of stock resistant to infestation and, finally, direct action against the trypanosome vector, the tsetse fly itself; these different approaches are all the object of simultaneous research and its application, and none must be neglected.
