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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.
Did you know?
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Did you know?
The human body produces and destroys 15 million blood cells every second.
Did you know?
There are more bacteria in your mouth than there are people in the world.
Did you know?
Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.