is streptococcus pyogenes positve for bacitracin sensitive
1 Group A Streptococcus (Streptococcus pyogenes). 2  These are beta-hemolytic, and bacitracin sensitive; cause septicemia, impetigo, pharyngitis, acute glomerulonephritis (AGN), rheumatic fever, wound infections, etc. 3  Group B Streptococcus (Streptococcus agalactiae).