AFRICAN TRYPANOSOMIASIS 



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Its flagellum is uncertain. 



Its reservoir is the warthog". 



Group (C): Trypanosoma Vivax Group. 



General features of all in this group: — 



They are monomorphic. 



Their movements are extremely rapid. 



Their posterior extremity is enlarged. 



The cytoplasm is clear and hyaline. 



The kinetonucleus is large and terminal. 



The undulating membrane is but little developed and simple. 



The trypanosome only affects horses, cattle, goats and sheep. 



It does not affect dogs, rabbits and pigs. 



Development begins in the labial cavity of the proboscis, later in 

 the salivary duct or hypopharynx. No part takes place in the intestinal 

 tract. 



Trypanosoma bmcei in division, n, nucleus ; bl, blepbaroplast ; /, flagellum. x 2,000. 



(After Laveran and Mesnil.) 



(i) T. vivax. 



Synonym : T. cazalboui. 



It is very active. 



It is widely distributed. 



It attacks horses, cattle, sheep and goats only. 



It is fatal to cattle in Uganda. 



(2) T. caprce. 



It affects cattle, sheep and goats only. 



It is more heavily built than the above. 



It is found in Nyasaland and L. Tanganyika only. 



(3) T. uniforme. 



It is as T. vivax, but smaller. 

 It is only found in Uganda. 



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