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The average office desk has 400 times more bacteria on it than a toilet.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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There are 20 feet of blood vessels in each square inch of human skin.
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There are approximately 3 million unintended pregnancies in the United States each year.
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Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.