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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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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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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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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.