thanks for posting your query to HCM . Saphylococus is harbour in nasal caviy and some time present without producing any clinical illness . so you need to take cmplete cource of antibiotic to cure it . I wanted to know what medicartion you had taked so far . As oral antibiotics are not very much effective alone ,it should be added with local application . Further you should take medication according to your culture and snsitivity report and if you didnt test that go ahed for that . Mupirocine ointment are useful in clearing infection agent wih oral antibiotics . So send me the deail of your medicaion as per your sensitivity report . thanks