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Transmission of African Trypanosomiasis: Interactions Among Tsetse Immune System, Symbionts, and Parasites

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Advances in Disease Vector Research

Part of the book series: Advances in Disease Vector Research ((VECTOR,volume 7))

Abstract

The threat posed to man and his domestic livestock by trypanosomiasis in Africa is related almost entirely to the distribution of infected tsetse flies. The natural infection rates of tsetse have long been used by those concerned with epidemiology and control to assess the risk or “challenge” created by the disease. Infection rates are determined by dissection and microscopy of testse; such examinations were (and still are) carried out across the fly belts of Africa—a typical example being the work of Pires et al. (102) who dissected more than 18,000 flies. The following infection rates were recorded for the three major pathogenic trypanosome groups: T. vivax 6%, T. congolense 2%, and no T. brucei infections (102). Jordan (60) brought together the results of field dissections such as these carried out in various parts of Africa between 1964 and 1972 and revealed that low levels of infection were the norm for all three major trypanosome groupings but especially for the brucei group, “mature” (salivary gland) infections of which were rarely seen. Localized “hot spots” were observed occasionally for vivax group infections.

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Maudlin, I. (1991). Transmission of African Trypanosomiasis: Interactions Among Tsetse Immune System, Symbionts, and Parasites. In: Harris, K.F. (eds) Advances in Disease Vector Research. Advances in Disease Vector Research, vol 7. Springer, New York, NY. https://doi.org/10.1007/978-1-4613-9044-2_6

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