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Vaccines prevent between 2.5 and 4 million deaths every year.
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To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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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.