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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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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.
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There are more bacteria in your mouth than there are people in the world.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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There are more nerve cells in one human brain than there are stars in the Milky Way.