Detection of resistance determinants mecA, vanA, and vanB in prospectively collected monomicrobial blood cultures by Verigene BC-GP (n = 599 S. aureus/S. epidermidis, n = 81 E. faecalis/E. faecium).

aTotal number of cultures with reported result.b95% confidence interval.cmecA is reported only for cultures with positive S. aureus or S. epidermidis species targets. Inferred based upon resistance to cefoxitin using disk diffusion method.dmecA specific PCR was positive for eight of 14 isolates. Final specificity of 97.5%.emecA specific PCR was negative for four of five isolates. Final sensitivity of 99.7%.fvanA and vanB are reported only for cultures with positive E. feacium or E. faecalis targets.gvanB was not detected in any prospectively collected cultures.FN, false negative; FP, false positive; TN, true negative; TP, true positive.