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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.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
There are approximately 3 million unintended pregnancies in the United States each year.
Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
More than 4.4billion prescriptions were dispensed within the United States in 2016.