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Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Did you know?
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.
Did you know?
The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

