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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.
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The average adult has about 21 square feet of skin.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.