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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Medication errors are more common among seriously ill patients than with those with minor conditions.
Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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