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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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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, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").