| ORIGINAL ARTICLE
|Year : 2006 | Volume
| Issue : 1 | Page : 34-38
Prevalence and antimicrobial susceptibility pattern of methicillin resistant Staphylococcus aureus: A multicentre study.
K Rajaduraipandi1, KR Mani2, K Panneerselvam1, M Mani3, M Bhaskar4, P Manikandan5
1 Department of Microbiology, Dr. GR Damodaran College of science, Coimbatore- 641 014, Tamilnadu, India
2 Pasteur Institute of India, Coonoor, Tamilnadu, India
3 Microbiological Laboratory, Coimbatore, Tamilnadu, India
4 Department of Microbiology, Coimbatore Medical College, Coimbatore, Tamilnadu, India
5 Department of Microbiology, Aravind Eye Care System, Aravind Eye Hospital and Post Graduate Institute of Ophthalmology, Coimbatore-641 014, Tamilnadu, India
Purpose: Methicillin resistant Staphylococcus aureus (MRSA) is an important nosocomial pathogen. We report the prevalence and antibiotic susceptibility pattern of MRSA in major southern districts of Tamilnadu. Methods: A total of 7172 clinical specimens and 1725 carrier screening samples were collected from different centers and subjected to MRSA screening using conventional microbiological methods. Subsequently the antibiotic sensitivity test was performed for the confirmed MRSA isolates. Results: Out of 906 strains of S. aureus isolated from clinical and carrier samples, 250 (31.1%) and 39 (37.9%) were found to be methicillin resistant respectively. Almost all clinical MRSA strains (99.6%) were resistant to penicillin, 93.6% to ampicillin, and 63.2% towards gentamicin, co-trimoxazole, cephalexin, erythromycin, and cephotaxime. All MRSA strains (100%) of carrier screening samples had resistance to penicillin and about 71.8% and 35.9% were resistant to ampicillin and co-trimoxazole respectively. Multidrug resistance was observed among 63.6% of clinical and 23% of carrier MRSA isolates. However, all strains of clinical and carrier subjects were sensitive to vancomycin. Conclusion: The determination of prevalence and antibiotic sensitivity pattern of MRSA will help the treating clinicians for first line treatment in referral hospitals.
Department of Microbiology, Dr. GR Damodaran College of science, Coimbatore- 641 014, Tamilnadu
Source of Support: None, Conflict of Interest: None
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