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Which of the following diseases has been completely eradicated worldwide by vaccination?
ASmallpox
BMalaria
CTuberculosis
DAIDS
Answer & Solution
Correct answer: A. Smallpox
**Smallpox** = the only human disease completely eradicated by global vaccination (last natural case 1977; WHO declared eradication in 1980). **Polio** is close to eradication. TB, malaria and AIDS are not eradicated.
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