oa East African Geographical Review - Tsetse control in Uganda
Tsetse-flies are important only because they are the vectors of protozoan parasites of the genus Trypanosoma, which give rise to various types of the deadly group of diseases known collectively as Trypanosomiasis. These diseases affect both man and his domestic animals - the human diseases being commonly known as Sleeping Sickness and the animal diseases as Nagana. As with the tsetse, of which twenty-three different species are now recognised, there are also numerous different species of trypanosome, some of which can infect man and not his domestic animals, and others vice versa.
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