[以微菌落形态作为鉴别化脓性链球菌和B族链球菌时识别细菌的标准]

[The morphology of microcolonies as a criterion for recognizing bacteria in the differentiation of Streptococcus pyogenes and Streptococcus group B].

作者信息

Khadzhiev S, Khadzhieva N

出版信息

Zh Mikrobiol Epidemiol Immunobiol. 1990 Feb(2):10-3.

Abstract

The authors studied the diagnostic importance of the morphology of microcolonies of S. pyogenes and group B streptococci in comparison with the currently used tests for the differentiation of these two species: the bacitracin test, the hydrolysis of sodium hippurate and the CAMP test. The standard tests proved to be positive in 94-97% and microcolonies had typical morphology in 86-95.7%. The statistical indices of the diagnostic effectiveness of differential tests varied within 93.8-98.9%. The diagnostic value of the study of the morphology of colonies was characterized by the following data: the sensitivity and prognostic negative value of the study were 95% for S. pyogenes and 86-89% for group B streptococci, while its specificity and prognostic positive value were 100% due to the absence of false positive results.

摘要

作者研究了化脓性链球菌和B组链球菌微菌落形态的诊断重要性，并与目前用于区分这两种菌的试验进行了比较：杆菌肽试验、马尿酸钠水解试验和CAMP试验。标准试验的阳性率为94%-97%，微菌落具有典型形态的比例为86%-95.7%。鉴别试验诊断有效性的统计指标在93.8%-98.9%之间。菌落形态研究的诊断价值由以下数据表征：化脓性链球菌的研究敏感性和预后阴性值为95%，B组链球菌为86%-89%，而由于没有假阳性结果，其特异性和预后阳性值为100%。