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Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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Cyanide works by making the human body unable to use oxygen.
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Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.