Ask unlimited questions for free
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.
The average office desk has 400 times more bacteria on it than a toilet.
Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
For a complete list of videos, visit our video library