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Table 1 Number of GBS-positive cultures detected by different culture media in separate vaginal and rectal specimens obtained from 150 pregnant women

From: Genotyping of Streptococcus agalactiae(group B streptococci) isolated from vaginal and rectal swabs of women at 35-37 weeks of pregnancy

Specimen No. of positive GBS cultures detected by
  Columbia CNA agar Lim broth + Granada agar Lim broth + Columbia CNA agar Total no. of women colonized
Vaginal 11 28 24 28
Rectal 11 27 11 27
Total 22 55 45 36