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In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.
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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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The horizontal fraction bar was introduced by the Arabs.
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As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.
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There are 20 feet of blood vessels in each square inch of human skin.