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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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More than 4.4billion prescriptions were dispensed within the United States in 2016.
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The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.