Bile medium for rapid presumptive identification of group B streptococci.
A bile medium was developed for rapid presumptive identification of beta hemolytic group B streptococci. Of 131 clinical isolates of group B streptococci, 125 (95.4%) yielded positive reaction within 6 h incubation. No false positive reaction was found in 134 clinical isolates of groups A, C, F, and G beta-hemolytic streptococci. The sensitivities of the bile medium, rapid hippurate hydrolysis and modified LAL-1 medium were 95.4, 98.5 and 93.1%, respectively. All three media showed 100% specificity. Therefore, the bile medium provides as an additional medium for rapid presumptive identification of group B streptococci.
Wu
J J
JJ
Department of Medical Technology, National Cheng-Kung University Medical College, Tainan, Taiwan, ROC.
Wang
L R
LR
Huang
A H
AH
D001646:Bile / Q000502:physiology*; D003470:Culture Media; D006801:Humans; D012680:Sensitivity and Specificity; D013292:Streptococcus agalactiae / Q000302:isolation & purification*
D003470:Culture Media