Streptococcus pyogenes

S. pyogenes, or group A Strep (GAS), is the most common cause of pharyngitis. It is also responsible for more serious diseases such as necrotozing fasciitis, Toxic shock syndrome, scarlet fever, and rheumatic fever. It can also cause various soft tissue infections.

 

 

 

Epidemiology

Classification and Characteristics

 

Virulence Factors

group A strep virulence factors

 

Transmission and Infection

 

Clinical Manifesations

pharyngitis (strep throat)

necrotizing fasciitis

 

cellulitis

toxic shock

 

erysipelas

 

 

scarlet fever

 

 

 

rheumatic fever

 

impetigo (pyoderma): epidermal infection

glomerular nephritis

Diagnosis

 

Treatment