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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.