The Bottom line: A study of 36 cases of streptococcal necrotizing fasciitis and divided the stages into acute and subacute. It appeared the only difference between them was the higher incidence of vascular thrombi in acute cases.
Umbert, I J Necrotizing fasciitis: a clinical, microbiologic, and histopathologic study of 14 patients. Journal of the American Academy of Dermatology 1989 vol:20 iss:5 pg:774 -781
Early diagnosis of necrotizing fasciitis is important for successful therapy of this derrnatosis, which is associated with considerable morbidity and mortality. Cultures from involved tissue test positive for multiple aerobic and anaerobic bacteria and for fungi
Also refer to previous post: Necrotizing fasciitis: pathogenesis and treatment