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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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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.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.