TABLE 1

Group B streptococci used in this study and their observed phenotypes and genotypesa

StrainYr receivedLocationCAMP factorMLST typebPFGE cluster181-bp deletion522-bp deletion7-kb deletion49-kb deletion
159022018AK+ST-860A1+
141412016LA (lab A)+ST-860A1+
111332013ND+ST-860A1+
158272018WI (lab C)+ST-860A1+
149842017LA (lab B)+ST-860A2+
140532015LA (lab A)+ST-860A3+
141402016LA (lab A)+ST-860A3+
158292018WY+ST-23B1+
158302018WY+ST-23B2+
115132014CO+ST-19E1+
100722012IAST-22D1+
102012012IAUnknown*D2+
158442018KSST-19C1+
155942017IrelandST-19C1+
163962018MOST-19C1+
140652015LA (lab A)+A1
143132016LA (lab A)+A1
143142016LA (lab A)+A1
143272016LA (lab A)+A1
143282016LA (lab A)+A1
143302016LA (lab A)+A1
143922016LA (lab A)+A1
143122016LA (lab A)+A2
143292016LA (lab A)+A2
143312016LA (lab A)+A2
143332016LA (lab A)+A2
143912016LA (lab A)+A2
143152016LA (lab A)+A4
143262016LA (lab A)+A5
149272017OH+B3
143932016LA (lab A)F1
  • a +, Presence; –, absence. For the locations, U.S. state abbreviations are given where applicable. lab A, laboratory A.

  • b Only 15 isolates were sequenced and typed using MLST. *, Unknown sequence type (ST) but very closely related to ST-22.