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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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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.