What is the main vector responsible for transmitting African trypanosomiasis (sleeping sickness) to humans and nagana to cattle?
Answer and explanation
Correct answer: D. Tsetse fly (Glossina)
- Step 1: Tsetse flies of the genus Glossina feed on vertebrate blood in riverine and forest fringes. Step 2. They inject Trypanosoma protozoa into the bloodstream during feeding. Answer: Tsetse fly (Glossina). Why not the others: Blackflies transmit onchocerciasis (river blindness); houseflies transmit typhoid/cholera mechanically; sandflies transmit leishmaniasis.
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