Impetigo is an infection of the skin caused primarily by
the bacterium Streptococcus pyogenes, also known as Group A Streptococci
(GAS). Sometimes another bacterium,
Staphylococcus aureus, can also be isolated from impetigo lesions.
fact sheet -
A streptococcal infections (GAS) CDC (Exit DHS)
Local Health Departments - Regional offices - Tribal agencies
March 04, 2014