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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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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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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
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Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.