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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.
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Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.