Which disease was the target of the first successful vaccination? Correct
The correct answer is Smallpox. Smallpox was indeed the target of the first successful vaccination. Polio, measles, and tuberculosis were not the diseases targeted by the first successful vaccination. Edward Jenner's groundbreaking work in 1796 focused on smallpox, where he discovered the principle of vaccination by using cowpox to confer immunity to smallpox. Smallpox was the first disease for which an effective vaccine was developed, leading to the eventual eradication of the disease.
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