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About 100 new prescription or over-the-counter drugs come into the U.S. market every 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.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.