Dependent on the strain and its resistance profile. Staph aureus might be treated fine with some penicillins; or, it might have acquired methicillin resistance.

Dependent on the strain and its resistance profile. Staph aureus might be treated fine with some penicillins; or, it might have acquired methicillin resistance. Same staph aureus though, otherwise. On the other hand, yes, pseudomonas infection is quite different from staph infection. But that's not what GP is referring to.