http://www.kidshealth.org/teen/infections/skin_rashes/impetigo.html
This document provides information about impetigo, a skin infection typically caused by one of two bacteria: group A streptococcus (the same bacteria that cause strep throat) or staphylococcus aureus. The document, geared toward teens, answers questions about the infection, including what is impetigo, what are its signs and symptoms, and how is impetigo diagnosed and treated.