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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.
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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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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.