It has been previously well defined that selective vagino-anorectal culture is required for detection of group B streptococcal (GBS) carriage. We interestingly observed that in 5.74% of carriers, GBS were recovered only from cervico-vaginal samples inoculated onto nonselective human blood agar, without recovery from vagino-anorectal samples inoculated to four selective media.

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http://dx.doi.org/10.1016/s0732-8893(02)00555-2DOI Listing

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