Trypanosome Infection Rate in Glossina tachinoides: Infested Rivers of Limmu Kosa District Jimma Zone, Western Ethiopia

Abstract Objective: Trypanosomosis is a disease of domestic animals and humans resulting from infection with parasitaemic protozoa of the genus Trypanosoma transmitted primarily by tsetse flies. The study was conducted to estimate the infection rate of trypanosome in vector flies and involved parasite species. Result: A cross-sectional study was conducted from January-March 2018, to study the distribution and infection rate of trypanosome in vector flies and involved parasite species. Study methodology involved entomological survey using monoconical traps to study the magnitude of Fly density Flay/Trap/Day (FTD) and tsetse fly dissection to estimate infection rate of trypanosome in vector flies. The study result indicated that there was only one species of Tsetse fly Glossina tachinoides detected with FTD=4.45. Total of n=284 tsetse flies were dissected and n= 5 positive for Trypanosome resulting in 1.76% Infection Rate. Higher trypanosome infections were observed in female tsetse 1.41%, n=4 and 0.35%, n=1 in males. Furthermore, 1.06% of the trypanosome infections carried by Glossina tachinoides were classified as Trypanosome vivax and the remaining 0.70% was Trypanosome congolense. Keywords: Limmu Kosa District, Trypanosome, Infection Rate, Glossina tachinoides