31. The disease is spread by tsetse flies, which carry a parasite from human to human. 32. Within the puparial shell, tsetse complete the last two larval instars and the pupal stage. 33. Procyclins are proteins developed in the surface coating of trypanosomes whilst in their tsetse fly vector. 34. Government initiatives have also been instrumental in the eradication of the tsetse fly in the region. 35. Sometimes, wild animals can be infected by the tsetse fly and they act as reservoirs. 36. "T . brucei " is found where the tsetse fly vectors are prevalent. 37. This form is caused by " Trypanosoma suis " and is transmitted by tsetse . 38. The prevalence of tsetse fly depleted the livestock population at the end of the nineteenth century. 39. He published papers on tsetse fly bionomics and control, enhanced by figures he himself drew. 40. The farther into the wild the people pushed, the more they were bitten by tsetse flies.
