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Malaria mosquito vector — DTM&H MCQ

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ModerateMalariaMalaria mosquito vectorDTM&H

A village in The Gambia has night-time transmission of falciparum malaria despite good daytime mosquito avoidance. Larval sites are sunlit pools near houses. What is the vector or intermediate host most relevant to this infection?

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Correct answer: B — Female Anopheles mosquito

Female Anopheles mosquito is the single best answer because human malaria is transmitted by female Anopheles mosquitoes, many of which bite during evening or night hours. Female Aedes aegypti mosquito is plausible in a related presentation, but it is less appropriate because it does not fit the key discriminator in this vignette. The teaching point is that Aedes vectors are more relevant to dengue, yellow fever, Zika and chikungunya.

Reference: WHO Guidelines for malaria, 2025; UKHSA Malaria prevention guidelines for travellers from the UK, 2025; CDC Yellow Book 2026