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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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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.
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There are more sensory neurons in the tongue than in any other part of the body.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.