Microbial assessment and antimicrobial susceptibility profiles of bacteria isolated from different parts of Sulaiman Al-Rajhi University.

This research aimed to assess the presence and distribution of bacteria in Sulaiman Al-Rajhi University, specifically in the dormitory and campus. Samples were collected from ten selected locations in triplicate, and the total number of colonies produced was 348 from 30 samples, with an average of 11.6 colonies at every site. The highest counts of bacteria were found on the toilet flush and water tap in both the dormitory and campus. Staphylococcus aureus and Escherichia coli were the most commonly distributed bacterial strains, and Klebsiella pneumonia and Enterobacter cloacae were found in trace amounts. The results suggest that both the dormitory and campus are contaminated with different strains of bacteria. Antibiotic susceptibility testing showed that Staphylococcus aureus had the highest susceptibility to erythromycin and clindamycin and the lowest susceptibility to penicillin and cephalothin.

本研究旨在评估苏莱曼·拉吉大学（Sulaiman Al-Rajhi University）内细菌的存在情况与分布特征，重点覆盖宿舍与校园区域。研究人员从选定的10个采样点开展三次重复采样，共计获取30份样本，最终得到348个菌落总数，各采样点的平均菌落数为11.6。在宿舍与校园区域的马桶冲水装置及水龙头处，均检测到最高的细菌载量。金黄色葡萄球菌（Staphylococcus aureus）与大肠埃希氏菌（Escherichia coli）为分布最为广泛的菌株，而肺炎克雷伯菌（Klebsiella pneumonia）与阴沟肠杆菌（Enterobacter cloacae）仅检出微量。研究结果表明，宿舍与校园区域均受到不同菌株的细菌污染。抗生素敏感性试验显示，金黄色葡萄球菌对红霉素与克林霉素的敏感性最高，而对青霉素与头孢噻吩的敏感性最低。