TABLE 2.

MICs for H. influenzae isolated from CF patients, as determined by the Epsilon test

AntibioticNo. of isolatesaMIC rangebMIC50bMIC90bGeometric mean
Ampicillin1880.064-2560.50640.88
1150.064-2560.25640.82
Amoxicillin-clavulanic acid1880.064-80.520.55
1150.064-40.520.47
Cefotaxime1880.003-20.230.1250.03
1150.003-10.0160.060.02
Chloramphenicol1880.125-160.580.70
1150.125-160.51.00.53
Cotrimoxazole1880.012-644641.8
1150.012-644320.90
Ciprofloxacin1880.003-640.01240.04
1150.003-320.0120.0250.01
  • a Two values are specified: 188 is the total number of isolates, and 115 is the number of PFGE patterns.

  • b Expressed in micrograms/milliliter.