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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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There are more nerve cells in one human brain than there are stars in the Milky Way.
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Medication errors are more common among seriously ill patients than with those with minor conditions.
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The human body produces and destroys 15 million blood cells every second.
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The horizontal fraction bar was introduced by the Arabs.