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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.
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There are 20 feet of blood vessels in each square inch of human skin.