Different bacteria were isolated during the study including E. coli, Pseudomonas spp., Citrobacter spp., Enterobacter spp., Morganella spp., Proteus spp., Providencia, Staph. aureus, and Staph. epidermidis. Then check the susceptibility of these bacteria against different antibiotic like Augmentin (a combination of Amoxicillin and Clavulanic Acid), Amoxil (Amoxicillin), Velocef (Cephradine), Cefizix (Ceftizoxime Sodium), Ciproxin (Ciprofloxacin), Erythrocin (Erythromycin), Meronem (Meropenem), Gentacin (Gentamycin), Vibramycin (Doxycycline), Vancocin (Vancomycin), Septran (a combination of Trimethoprim and Sulphamethoxazole), Sulzone (a combination of Cefoprazone and Sulbactam)and Tazocin (a combination of Piperacillin and Tazobactam). The studies showed that Meronem is the most effective drug against E. coli having 65.78% activity however E. coli showed 97.36% resistance against Erythrocin. The most effective drug against Pseudomonas spp. was Gentacin which was 83.33% sensitive and Pseudomonas spp. showed 91.66% resistance against Augmentin, Erythrocin and Vancocin. Citrobacter spp. showed 100% resistance against Vancocin. The most effective drug among there was Vibramycin 63.63%.

In the current study different samples were collected from computer accessories used in the Hazara University and different diagnostic laboratories of Mansehra city. 150 samples were examined for their total bacterial count and the maximum growths were observed from the samples collected. Similarly the samples were analyzed further for the identification of different micro-organisms such as E.coli, Klebsiella, S.aureus, S.epidermidis and these organisms were found to be present. The percentage of micro-organisms were 46.66% of E.coli, 20% of Klebsiella, 16.66 of S.aureus and, 16.66% of S.epidermidis were detected and identified on the selective media i.e. E.M.B. agar and Mannitol salt agar respectively. Furthermore, biochemical tests were performed to confirm their presence i.e. IMVIC Test, Catalase Test, Coagulase Tests were also performed for their identification. The identified micro-organisms were again checked for their susceptibility against different standard antibiotics and their zone of inhibition were measured and noticed. Some of the E.coli, Klebsiella and S.aureus showed reasonable resistance against the antibiotics used.