Methicillin Resistant Staphylococcus aureus (MRSA) in Patients of Community Based Medical College Hospital, Mymensingh, Bangladesh

Abstract

The rapid rise in resistance of Staphylococcus aureus to various antimicrobial agents is now a growing concern. The objectives of this study were to investigate the frequency of Methicillin Resistant S. aureus (MRSA) in different cases of infection, and to determine the pattern of antimicrobial susceptibility among the S. aureus originated from human in Mymensingh, Bangladesh. Covering a period of five months during July 2014 to November 2014, a total of 65 samples comprises of pus, wounds, eye lesions, burns were collected from the Community Based Medical College Hospital (CBMCH), Mymensingh, Bangladesh, and the samples were processed at the Department of Microbiology and Hygiene, Bangladesh Agricultural University (BAU), Mymensingh-2202. Among the 65 samples, 20% (n=13/65) were confirmed as S. aureus on the basis of colony morphology, staining characteristics, biochemical properties, and Polymerase Chain Reaction (PCR) by amplification of nuc gene (amplicon size 279-bp). Among these 13 S. aureus isolates, 15.38% (n=2/13) were found to be resistant to Methicillin which was confirmed by antibiotic disk sensitivity test and PCR by amplifying MRSA specific mecA gene (amplicon size 533-bp). The antibiotic disk sensitivity test indicated that the MRSA isolates were completely (100%) resistant to Penicillin and Erythromycin. The MRSA represents a major challenge for treatment in hospital due to the emergence and spread of antibiotic resistant isolates among susceptible individual.