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Did you know?
Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
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The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.