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Vaccines prevent between 2.5 and 4 million deaths every year.
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A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.
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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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When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.