Table 1

Reference and prototype GBS strains which expressed one or more of the antigens Z1, Z2, and R3, detected by fluorescent antibody testing

StrainMLSTResult for FAT with antiserum to antigen:Proposed serotyped
Z1Z2R3
08-07a8803+3+Ia/Alp3, R3, Z2
CMFR30a83+00Ib/Cα, , Z1
Prague 10/84 (ATCC 49447)263+3+3+V/R3, Z1, Z2
08-17a263+3+3+V/R3, Z1, Z2
04-534b1303+3+3+IX/Cα, Cβ, R3, Z1, Z2
00-884b1303+3+3+IX/Cα, Cβ, R3, Z1, Z2
Prague 24/60 (NCTC 9829)NDc03+3+NT/R3, Z2
Prague 25/60 (NCTC 9828)67003+NT/Alp4, R3
  • a Prototype strains of the Department of Medical Microbiology, St. Olav's University Hospital, Trondheim, Norway.

  • b Received from Statens Seruminstitut, Copenhagen, Denmark (13).

  • c ND, not determined (repeated attempts to sequence the glcK gene failed to provide a reliable sequence).

  • d Serotype and serosubtype markers known before the present study are in bold.