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Did you know?
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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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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There are 20 feet of blood vessels in each square inch of human skin.