|
Author Question: By 1850, the city with the largest black community (over 20,000 free African Americans) was: A) ... (Read 231 times) |
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.