Table 1.

Number of GBS culture positive samples detected by different culture media in rectovaginal, vaginal and rectal specimens obtained from 49 GBS positive samples from 22 GBS positive women

Specimen	CNA	GBSDA	CA	Lim-CNA	Lim- GBSDA	Lim- CA	Estimated number of women colonized
Rectovaginal ESwab	13	20	21	17	21	22	22
Vaginal ESwab	NT	NT	NT	9	11	11	11
Rectal Eswab	NT	NT	NT	13	17	18	18

CA: Chrom ID Strepto B agar (BioMérieux), CNA: colistin nalidixic acid Columbia agar, GBSDA: GBS Differential Agar (Becton Dickinson), Lim: Lim broth.

NT: Not tested.