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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
Approximately 500,000 babies are born each year in the United States to teenage mothers.
Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.
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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