[01] Ahmed Mohammed Sulaiman, Scientific Research Center, Faculty of Science University of Duhok, Duhok, Iraq.

20 S. aureas isolates isolated from 80 students, specimens were collected from the anterior narse using small sterile swabs placed in a screw-cap container containing transport (brain heart infusion broth) medium, All 20 S. aureas isolates capable of fermenting manitol were sub cultured on blood agar, only 10 isolates were ß-hemolytic representing 50% Whereas 7 isolates were found to be non hemolytic or -hemolytic representing 35%, and 3 isolates were -hemolytic representing 15%, All S. aureus (coagulase positive) isolates (20) had a -lactamase activity (100%) according to Detection of -lactamase Enzyme by Rapid Iodometric Method.

Staphylococcus aureus, β-lactam, Gram Positive

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