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In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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.


