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Did you know?
Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.
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Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.
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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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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.