TABLE 3 

Antimicrobial susceptibility and auxotrophy testing results for isolates recovered from subjects with SCVs

Susceptibility or auxotrophy resultNo. (%) for SCV status:
Yes (n = 42)No (n = 34)
Antimicrobial susceptibility testing
    Oxacillin susceptiblea20 (47.6)21 (61.8)
    Gentamicin susceptible36 (85.7)30 (88.2)
    Rifampin susceptible37 (88.1)33 (97.1)
    Minocycline susceptible42 (100)33 (97.1)
    Vancomycin susceptible42 (100)34 (100)
    Trimethoprim-sulfamethoxazole susceptibleb34 (85.0)31 (91.2)
Auxotrophy observed
    CO28 (19.0)
    CO2 and menadione1 (2.4)
    Hemin1 (2.4)
    No CO2, menadione, thymidine, or hemin auxotrophy detected32 (76.2)
  • a Oxacillin susceptibilities were determined using cefoxitin disc diffusion testing.

  • b Trimethoprim-sulfamethoxazole susceptibility could not be determined for 2 SCV isolates due to poor growth, even with blood-containing medium.