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Did you know?
Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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There are 60,000 miles of blood vessels in every adult human.