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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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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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If you could remove all of your skin, it would weigh up to 5 pounds.
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Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.
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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.