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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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Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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The familiar sounds of your heart are made by the heart's valves as they open and close.