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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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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).