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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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There are approximately 3 million unintended pregnancies in the United States each year.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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The longest a person has survived after a heart transplant is 24 years.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.