Yellow fever vaccination — DTM&H MCQ
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Correct answer: C — Yellow fever vaccination
Yellow fever vaccination is the single best answer because yellow fever vaccination is recommended or required for many travellers to risk areas in West Africa. Japanese encephalitis vaccine 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 mosquito bite avoidance remains important because other arboviruses are not prevented by this vaccine.
Reference: CDC Yellow Book 2026; UKHSA/NathNaC travel health guidance; BNF