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The eradication of which disease was announced in December 1979?
The right answer is: Smallpox
After successful vaccination campaigns throughout the 19th and 20th centuries, the WHO certified the eradication of smallpox in December 1979.
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Fun Facts
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According to statistics, you will live the longest in which U.S. state?
Science
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Diana is sixteen years old, and she is four times older than her younger brother. How old will the girl be when she is two times older than her younger brother?