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Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.
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There are 20 feet of blood vessels in each square inch of human skin.
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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
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There are more sensory neurons in the tongue than in any other part of the body.