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Did you know?
Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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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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Cyanide works by making the human body unable to use oxygen.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.