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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.
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There are approximately 3 million unintended pregnancies in the United States each year.
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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.