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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.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.
The longest a person has survived after a heart transplant is 24 years.
Approximately 25% of all reported medication errors result from some kind of name confusion.
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