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Vaccines prevent between 2.5 and 4 million deaths every year.
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Illicit drug use costs the United States approximately $181 billion every year.
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The horizontal fraction bar was introduced by the Arabs.
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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.
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More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.