I am sorry to just jump in here like this. But I to was wondering about this. My daughter who has atypical cf . She cultutred clindamycin resistant stapphylococcus aureus. They did not say it was mrsa and also at the time did not treat it. But when I run it on the web as clindamycin resistant staph it always says mrsa? I was wondering why they did not treat it they later after her having pneumonia treated her with cipro but that will not touch staph . but her cough did go away. And now almost a year later she is back to the same thing. So I gues I have the same question when is it considered MRSA? Thanks, Kathy