Performance of a new chromogenic medium, BBL CHROMagar MRSA II (BD), for detection of methicillin-resistant Staphylococcus aureus in screening samples.
Two chromogenic media for the detection of MRSA were compared: BBL CHROMagar MRSA II (BD) and MRSA ID agar (bioMérieux). Following overnight nonselective enrichment, 1,919 screening samples were inoculated on both chromogenic agars. After 24 h, the sensitivities of both media were high and comparable. Both media showed an important decrease in specificity after 48 h of incubation (decreases of 8% for MRSA II and 10% for MRSA ID), but MRSA II was significantly more specific at both time points.
Van Vaerenbergh
Kristien
K
Department of Microbiology, Onze-Lieve-Vrouwziekenhuis, Moorselbaan 164, 9300 Aalst, Belgium. kristien.van.vaerenbergh@olvz-aalst.be
Cartuyvels
Reinoud
R
Coppens
Guy
G
Frans
Johan
J
Van den Abeele
Anne-Marie
AM
De Beenhouwer
Hans
H
D001431:Bacteriological Techniques / Q000379:methods*; D002863:Chromogenic Compounds / Q000378:metabolism*; D003470:Culture Media / Q000737:chemistry*; D006801:Humans; D008403:Mass Screening / Q000379:methods*; D055624:Methicillin-Resistant Staphylococcus aureus / Q000302:isolation & purification*; D012680:Sensitivity and Specificity; D013203:Staphylococcal Infections / Q000175:diagnosis* / Q000382:microbiology
D002863:Chromogenic Compounds; D003470:Culture Media