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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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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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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.