الفهرس 
Introduction and Aim of The WorkOnly 14 pages are availabe for public view
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Abstract
In this study four hunderds specimens were collected (245 urine samples, 39 throat swabs, 30 sputum samles and 86 wound swabs), from four different types of immunosuppressed patients, 217 (54.25%)cancer patients, 132 (33%)diabetic patients, 43 (10.75%)burn patients and 8(2%)tuberculous patients. The sensitivity pattern for the isolated bacterial strains revealed that gatifloxacin, levofloxacin, imipenem, ciprofloxacin, ofloxacin and amilacin, were the most active antimicrobial agents against most of the isolated strains (99.28%, 98.94%, 95.2%, 92.65%, 88.57% and 85.23% respectively). Methicillin resistance applied to Staph. aureus and Staph. epidermidis strains revealed that 29.6% were MRSA, and 17.55% were MRSE respectively. The resistance of staph. aureus and staph . epidermidis to vancomycin were 22.9% and 16.51% respectively. B-lactamase detection was carried out on 54 different strains resistant to amoxycillin, (18 staph. aureus, 6 staph. epidermidis, 12 E.coli, 7Ps. aeeruginosa, and 9Kl. Pneumoniae and 2 Kl. oxytoca isolates). from the tested strains, 57.7% were B-lactamase producers. Plasmid isolation for B-lactamase producing, highly resistant strains was carried. Some of these strains were harbouring plasmids that may be responsible for the increased resistance to many antibiotics.