- gram postive .spherical shape (cocci).
- GABHS(GROUP A BETA HEMOLYTIC STEPTOCOCCUS)
S.pyogenes known as GABHS cause it produces large zones of beta-hemolysis (the complete disruption of erythrocytes and the release of hemoglobin) when cultured on blood agar plates
Figure 1. Streptococcus pyogenes. Left. Gram stain of Streptococcus pyogenes in a clinical specimen. Right. Colonies of Streptococcus pyogenes on blood agar exhibiting beta (clear) hemolysis.
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