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The average office desk has 400 times more bacteria on it than a toilet.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.
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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.