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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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To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.
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Excessive alcohol use costs the country approximately $235 billion every year.
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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.