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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
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Medication errors are three times higher among children and infants than with adults.
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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 most common treatment options for addiction include psychotherapy, support groups, and individual counseling.