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Vaccines prevent between 2.5 and 4 million deaths every year.
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The longest a person has survived after a heart transplant is 24 years.
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The average office desk has 400 times more bacteria on it than a toilet.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.