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Year : 2007  |  Volume : 25  |  Issue : 1  |  Page : 50--52

In vitro activity of antimicrobial agents against oxacillin resistant staphylococci with special reference to Staphylococcus haemolyticus

A Chaudhury, AG Kumar 
 Department of Microbiology, SV University of Medical Sciences, Tirupati - 517 507, Andhra Pradesh, India

Correspondence Address:
A Chaudhury
Department of Microbiology, SV University of Medical Sciences, Tirupati - 517 507, Andhra Pradesh
India

One hundred and sixty seven isolates of staphylococci isolated from the inpatients of a tertiary care referral hospital in South India were speciated and activity of oxacillin, glycopeptides, linezolid and quinupristin/dalfopristin against these isolates was tested by broth microdilution method. Of the 114 coagulase negative staphylococci (CoNS), 49.1 % were S. haemolyticus, isolated predominantly from urine (64.6%), while the rest belonged to 11 other species. More than half the isolates of S. aureus (52.8%) and 68.4% of the CoNS were oxacillin resistant. All the strains were uniformly susceptible to vancomycin, linezolid and quinupristin/dalfopristin; but 25.6% isolates of S. haemolyticus showed reduced susceptibility to teicoplanin (MIC: 8-16 mg/L). Our study demonstrates the high prevalence of oxacillin resistance among hospital isolates of S. aureus and CoNS in India. Vancomycin, along with the newer agents like linezolid and quinupristin/dalfopristin remains the drug of choice for treating multi drug resistant staphylococcal infections.

How to cite this article:
Chaudhury A, Kumar A G. In vitro activity of antimicrobial agents against oxacillin resistant staphylococci with special reference to Staphylococcus haemolyticus.Indian J Med Microbiol 2007;25:50-52

How to cite this URL:
Chaudhury A, Kumar A G. In vitro activity of antimicrobial agents against oxacillin resistant staphylococci with special reference to Staphylococcus haemolyticus. Indian J Med Microbiol [serial online] 2007 [cited 2020 Nov 26 ];25:50-52
Available from: https://www.ijmm.org/article.asp?issn=0255-0857;year=2007;volume=25;issue=1;spage=50;epage=52;aulast=Chaudhury;type=0