Streptococcus pyogenes is a gram-po

Streptococcus pyogenes is a gram-positive bacterium that usually grows in pairs or chains. It has been classified as a beta-hemolytic streptococcus Furthermore, it has been classified using Lancefield serotyping as group A, Therefore, this bacterium is commonly called the beta-hemolytic group A streptococcus, or GAS. (2)