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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
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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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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.