Jokipii A M, Jokipii L
J Clin Pathol. 1976 Aug;29(8):736-9. doi: 10.1136/jcp.29.8.736.
The comparative performance of three presumptive identification tests for group B haemolytic streptococci was investigated, using 371 different clinical isolates of group B streptococci. Hippurate was hydrolysed by 96-1%, the CAMP reaction was positive in 95-0%, and pigment was produced by 97-3%. A combination of any two tests would have detected over 99-8%. On bile esculin agar 99-0% were able to grow, but non hydrolysed esculin; 5-1% were susceptible to bacitracin. The minimum inhibitory concentrations of five antibiotics for 279 group B streptococci were determined. All were susceptible to penicillin G, ampicillin, cephalothin, and erythromycin, while 80% were resistant to tetracycline. The MIC distributions were independent of the results of any identification test.
使用371株不同的B族溶血性链球菌临床分离株,对三种用于B族溶血性链球菌的初步鉴定试验的比较性能进行了研究。96.1%的菌株能水解马尿酸盐,95.0%的菌株CAMP反应呈阳性,97.3%的菌株产生色素。任意两种试验联合使用能检测出超过99.8%的菌株。在胆汁七叶苷琼脂上,99.0%的菌株能够生长,但不水解七叶苷;5.1%的菌株对杆菌肽敏感。测定了五种抗生素对279株B族链球菌的最低抑菌浓度。所有菌株对青霉素G、氨苄西林、头孢噻吩和红霉素均敏感,而80%的菌株对四环素耐药。最低抑菌浓度分布与任何鉴定试验的结果无关。