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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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If you could remove all of your skin, it would weigh up to 5 pounds.
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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
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The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.