TABLE 3.

Test results obtained with 20 isolates that were bile solubility negative but had positive AccuProbe results

IsolateResult by:
Optochin susceptibilityOmni serumSerotypingMorphologya
CO2Air
12bSusceptibleNo growthPositiveButton
158bSusceptibleSusceptiblePositiveOther
423ResistantSusceptibleNegativeOther
504ResistantSusceptiblePositiveOther
779ResistantSusceptiblePositiveOther
1004ResistantSusceptiblePositiveOther
1019ResistantSusceptiblePositiveOther
1065ResistantSusceptiblePositiveOther
1070ResistantSusceptibleNegativeOther
1088ResistantSusceptibleNegativeOther
1103ResistantSusceptibleNegativeOther
1134ResistantSusceptiblePositiveOther
1324ResistantSusceptibleNegativeOther
407ResistantResistantPositiveButton
1124ResistantResistantNegativeOther
1329ResistantResistantPositive35FOther
1584ResistantResistantPositive21Other
1652ResistantResistantNegative19AButton
1676ResistantResistantNegative35AOther
1704bResistantNo growthNegative35AOther
  • a Button morphology refers to central depression of colonies; “other” denotes alpha-hemolytic colonies without button or mucoid morphology.

  • b Repeat bile solubility testing of this isolate with 2% sodium deoxycholate was positive.