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Year : 2015  |  Volume : 4  |  Issue : 4  |  Page : 182-186

Nasal carriage of Methicillin- and Mupirocin-resistant S. aureusamong health care workers in a tertiary care hospital

1 Department of Microbiology, Mayo Institute of Medical Sciences, Barabanki, Uttar Pradesh, India
2 Department of Physiology, Mayo Institute of Medical Sciences, Barabanki, Uttar Pradesh, India

Correspondence Address:
Loveleena Agarwal
Department of Microbiology, Mayo Institute of Medical Sciences, Barabanki, Uttar Pradesh
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/2279-042X.167046

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Objective: Methicillin-resistant Staphylococcus aureus (MRSA) ranks top among the nosocomial pathogens. Nasal formulation of mupirocin is found to eradicate MRSA from colonized individuals, but the emergence of resistant strains is a matter of concern. Methods: Nasal swabs were collected from 200 health care workers (HCWs) who were screened for MRSA. Kirby–Bauer disc diffusion method was used to perform antibiotic susceptibility test. MRSA detection was done using a cefoxitin 30 µg disc and interpreted according to the Clinical and Laboratory Standards Institute guidelines. Determination of mupirocin resistance was performed using Epsilometer test (E-test). Findings: About 14% of HCWs showed nasal carriage of MRSA. Nursing orderlies were the predominant carriers. E-test showed four mupirocin resistant isolates. The antibiogram of the MRSA isolates revealed the higher resistance to antibiotics as compared to methicillin-sensitive Staphylococcus aureus. All the MRSA isolates were sensitive to linezolid. Conclusion: HCWs in our hospital showed high nasal carriage rate of MRSA, particularly the nursing orderlies which is statistically significant. It is advisable to detect mupirocin resistance among the isolates obtained from the HCWs so that in case of resistance, alternative treatment should be sought.

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