S. aureus (either methicillin-susceptible or methicillin-resistant S. aureus) is counting for 75% of cases.  Mixed flora (including S. aureus together with S. pyogenes and gram-negative bacilli with anaerobes)   Anaerobes, mostly seen in injecting drug users. 
Nontuberculous mycobacteria, blastomycosis, nocardiosis, and cryptococcosis.
What exactly is a cutaneous abscess?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: What exactly is a cutaneous abscess? [/INST] \n S. aureus (either methicillin-susceptible or methicillin-resistant S. aureus) is counting for 75% of cases.  Mixed flora (including S. aureus together with S. pyogenes and gram-negative bacilli with anaerobes)   Anaerobes, mostly seen in injecting drug users. 
Nontuberculous mycobacteria, blastomycosis, nocardiosis, and cryptococcosis.</s>