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Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
The average office desk has 400 times more bacteria on it than a toilet.
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.
Did you know?
The human body produces and destroys 15 million blood cells every second.
Did you know?
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.