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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.