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Research Journal of Microbiology
Year: 2011  |  Volume: 6  |  Issue: 12  |  Page No.: 884 - 890

Study of Staphylococcus aureus from Clinical Samples in Savar, Bangladesh

Rahima Begum, Syeda Tasneem Towhid, Mohammad Moniruzzaman, Zakaria Mia and Mohammad Ariful Islam    

Abstract: In this study, clinical samples were collected and characterized by culture techniques, antibiotic-resistance patterns, hemolysis and susceptibility to herbal agents. A total of 50 specimens of pus, urine, throat swab and sputum were collected to study Staphylococcus aureus. Eight of the isolates showed positive coagulation test and produced characteristic results for Staphylococcus aureus in culture media and biochemical tests. Results of antibiotics sensitivity test revealed the sensitivity of these isolates to Penicillin G, Oxacillin, Erythromycin, Gentamycin, Amikacin, Methicillin, Cotrimoxazole, Ciprofloxacin, and Erythromycin. However, 2 β-hemolytic isolates showed development of spontaneous resistance to 30 μg mL-1 of Penicillin and 15 μg mL-1 of Tetracycline. They were also resistant to traditionally known products such as Ocimum sanctum (Tulshi), Agadiracta indica (Neem) and Curcuma longa (Turmeric). One of the β-hemolytic isolate was resistant to action of fresh animal sera, indicating potential pathogenicity and resistance against the concentration of phenyl used in routine disinfection practices, which implies possibility of nosocomial transmission. Nevertheless, these two isolates were moderately sensitive to phenyl at 1:10 and 1:20 concentration. In conclusion, the clinical isolates of S. aureus in a Bangladeshi community are resistant to penicillin G, tetracycline, traditional herbal agents as well as certain concentration of disinfectants, implying risk of possible transmission.

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