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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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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Excessive alcohol use costs the country approximately $235 billion every year.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.