Table 1

S. maltophilia MIC summary dataa

AntimicrobialNo. of isolates testedCategory (no. of isolates)% in categoryMIC50 (mg/liter)MIC90 (mg/liter)Range (mg/liter)
SIRSIRLowHigh
MINb80743392.43.83.8240.2516
SXTb796901087.3012.70.50>320.012>32
DOXc513014758.827.513.74160.5016
CHLb7837221947.428.224.416642>256
LVXb8036143045.017.537.54>320.25>32
COLc803064437.57.555.08>2560.125>256
GENc751026313.32.784.0>256>2561>256
TIMb789195011.524.464.1256>2561>256
AMKc74826410.82.786.5>256>2568>256
CIPc80714598.817.573.716>320.50>32
CAZb7753696.53.989.6>256>2562>256
ATMc7040665.7094.3>256>2562>256
NETc4220404.8095.2>256>2562>256
TOBc8025732.56.391.2256>2562>1024
TZPc8025732.56.391.2>256>25616>256
SAMd6410631.6098.4>256>2564>256
RIFe80047605.095.032>322>256
PIPc12001200100>256>256256>256
IPMc80008000100>32>32>32>32
MEMc70007000100>32>3232>32
  • a S, susceptible; I, intermediate; R, resistant; MIN, minocycline; SXT, co-trimoxazole; DOX, doxycycline; CHL, chloramphenicol; LVX, levofloxacin; COL, colistin; GEN, gentamicin; TIM, ticarcillin/clavulanate; AMK, amikacin; CIP, ciprofloxacin; CAZ, ceftazidime; ATM, aztreonam; NET, netilmicin; TOB, tobramycin; TZP, piperacillin-tazobactam; SAM, ampicillin/sulbactam; RIF, rifampin; PIP, piperacillin; IPM, imipenem; MEM, meropenem.

  • b CLSI-approved interpretive standards for S maltophilia.

  • c CLSI-approved interpretive standards for nonenterobacteriaceae.

  • d CLSI-approved interpretive standards for A. baumannii.

  • e CLSI-approved interpretive standards for Staphylococcus species.