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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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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.