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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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The FDA recognizes 118 routes of administration.
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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
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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.
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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.