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Did you know?
Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.
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Cyanide works by making the human body unable to use oxygen.
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Medication errors are three times higher among children and infants than with adults.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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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.