General Susceptibility

Reliably susceptible:

  •  Penicillin

  •  Amoxicillin/Ampicillin

  •  Vancomycin.

Resistant to Cephalosporins.

Variably susceptible: Fluoroquinolones.

Aminoglycosides may be used for synergy in specific infections ie infective endocarditis if no high-level resistance. If urinary isolate, most are nitrofurantoin susceptible