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Did you know?
There are more bacteria in your mouth than there are people in the world.
Did you know?
In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").