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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.
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There are approximately 3 million unintended pregnancies in the United States each year.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.