154.A bite of tsetse fly may pass to humans (a) Leishmania donovani (b) Trypanosoma gambiense (c) Entamoeba histolytica (d) Plasmodium vivax.
Option B Trypanosoma gambiense is the parasitic zooflagellate which causes one of the deadliest ailments in human beings called sleeping sickness or trypanosomiasis. The disease is common in humid and subhumid zones of the African continent. The disease is transmitted by shade loving tsetse fly (Glossina palpalis) which acts as the vehicle that carries the culprit protozoan parasite.
