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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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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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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.