Selective broth medium for isolation of group B streptococci.

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  • 1 December 1973
    • journal article
    • Vol. 26  (6) , 884-5
Abstract
A selective medium containing Todd-Hewitt broth, sheep blood, nalidixic acid, and gentamicin sulfate was found to enhance significantly the isolation of group B streptococci from vaginal cultures. Preparation of the medium, which is stable for up to 4 weeks at 4 C, is simple and inexpensive. Use of such a medium should facilitate identification of vaginal colonization with group B streptococci.