TABLE 1

Antibiotic susceptibility profiles of cephalosporin-resistant V. alginolyticus strains and corresponding recipient transconjugant E. coli strain J53

Strain2015 isolation dateSourceβ-Lactamase gene productMIC (mg/liter)b of:
AMPAMCCTXCRONALCIPAMKTETCHLGENSXT
J5314/20.030.01510.030.50.520.250.25/4.75
VA11/14ShrimpPER-1>6416/8>16>160.50.06420.2532>16/304
T-VA1PER-1>648/4>16>1640.0150.5823216/304
VA21/20ShrimpVEB-1>644/2>16>1632>1618324>16/304
VAS3-13/14ChickenCMY-2>6464/32816160.50.516321>16/304
T-VAS3-1CMY-2>6464/328>1680.50.581618/152
VA43/4ShrimpNDa>644/2>16>160.50.524>3248/152
VA-53/14ShrimpVEB-1>648/4>16>162140.5180.25/4.75
T-VA5VEB-1>644/22280.030.50.5280.25/4.75
VA63/30ShrimpPER-1>644/216810.2542248/152
  • a ND, not detected.

  • b AMP, ampicillin; AMC, amoxicillin-clavulanic acid; CRO, ceftriaxone; CTX, cefotaxime; NAL, nalidixic acid; CIP, ciprofloxacin; AMK, amikacin; TET, tetracycline; CHL, chloramphenicol; GEN, gentamicin; SXT, trimethoprim-sulfamethoxazole.