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Did you know?
The human body produces and destroys 15 million blood cells every second.
Did you know?
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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