Table 1 Epidemiology and risk factors of necrotizing fasciitis
Type I | Type II | |
|---|---|---|
Causative organisms | Aerobic Anaerobic | Group A Streptococcus (GAS) Beta-hemolytic streptococci (alone or in combination with other species, most commonly Staphylococcus aureus) |
Risk factors | Diabetes Peripheral vascular disease (PVD) Immune compromise Recent surgery | Skin injury (laceration or burn) Blunt trauma Recent surgery Childbirth Injection drug use Varicella infection |