TABLE 5.

Mobile genetic elements and infB alleles of human CC 17 and CC 19 GBS

CCSerotypeNo. of isolatesInsertion site genotypeinfB alleleRDP typea
AW-10scpB-lmbhylB
17II21IS1563-GBSi1IS1548No insertAII-2 (ST-22)
II1No insertIS1548No insertA
III90GBSi1GBSi1No insertCIII-3
III1IS1563-GBSi1bIS1548No insertA
III1No insertNo insertNo insertC
19II23No insertGBSi1No insertAcII-1 (ST-28)
IIII-3 (ST-19)
III122No insertIS1548IS1548AdIII-2
III1No insertIS1548No insertA
  • a The RDP types and STs of the corresponding serotype II and III strains from reference 32 are shown.

  • b The single serotype III strain with the IS1563-GBSi1 insert in AW-10 and IS1548 in scpB-lmb (thus more closely resembling serotype II ST-22 strains) is ST-189.

  • c A single strain had the infB B allele, which varies from the A allele by one nucleotide substitution.

  • d A single strains had a novel infB allele, which varies from the A allele by one nucleotide substitution.