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Did you know?
The longest a person has survived after a heart transplant is 24 years.
Did you know?
More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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There are approximately 3 million unintended pregnancies in the United States each year.
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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.