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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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The average adult has about 21 square feet of skin.
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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
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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.