TABLE 1.

Phenotypic characteristics of the blood culture isolatea

ParameterBlood culture isolate (strain S32F2)
Catalase+
CO2 enhancement of growth+
Porphyrin test
Factor requirement (disc method)
    X+
    V+
Satellitism around S. aureus in horse blood agar+
Hemolysis
Indole
Ornithine decarboxylase−/+b
Urease+
Lipase
Fermentation
    Glucose+
    Fructose
    Maltose
    Sucrose
    Xylose+
Amino acid arylamidase
    γ-Glutamic acid
    Glycine
    Lysine+
    Proline
Alkaline phosphatase+
β-Galactosidase
Phenylphosphonate+
Phosphate choline+
Reduction of triphenyltetrazolium+
Resazurin+
Penicillinase+
  • a The Vitek NHI system identified isolates as 68% H. influenzae III and 29% H. haemolyticus. By the API NH system, isolates were identified as 99.5% H. influenzae IV and 0.4% H. parainfluenzae.

  • b Positive in the API NH system but negative in the Vitek NHI system.