Pregnant women admitted to Tampa General Hospital, Tampa, Fla., were cultured for group B streptococci (GBS). Culture swabs were placed into enriched, selective Todd-Hewitt medium and were quantitated for GBS. The broth cultures were tested by slide coagglutination before incubation and after 5 and 20 h of incubation. Fifty-four (27%) of the 201 maternity patients cultured were positive for GBS and were identified as such by slide coagglutination. A strong correlation was found between the magnitudes of colonization and the times required to identify the broth cultures as GBS positive. Cultures from mothers heavily colonized (mean concentrations of 3 x 104 GBS per culture swab or greater) were identified after 5 h or less of incubation. Mothers lightly colonized with GBS (mean concentrations of 2 x 102 GBS per culture swab) were identified only after their broth cultures had been incubated for 20 h.
CITATION STYLE
Jones, D. E., Friedl, E. M., Kanarek, K. S., Williams, J. K., & Lim, D. V. (1983). Rapid identification of pregnant women heavily colonized with group B streptococci. Journal of Clinical Microbiology, 18(3), 558–560. https://doi.org/10.1128/jcm.18.3.558-560.1983
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