TABLE 5.

Distribution of taxonomic traits between hemolytic and nonhemolytic H. haemolyticus strains

TraitNo. (%) of strainsPRaResults of χ2 analysis (P valuec)
Hemolytic (n = 33)Nonhemolytic (n = 76)
Molecular-based traits
    Hemolysis33 (100)0 (0)Referent
    MAb 7F30 (0)b13 (17.1)11.30.0114
Traditional traits
    H2S production24 (72.7)51 (67.1)0.920.5605
    Gas production31 (93.9)65 (85.5)0.880.2131
    Indole production20 (60.6)48 (63.2)1.040.8005
    Urease activity28 (84.8)49 (64.5)0.760.0319
    ODC activity2 (6.1)6 (7.9)1.300.7358
LOS gene virulence traits
    licA8 (24.2)38 (50.0)2.060.0124
    lic2A1 (3.0)16 (21.1)6.950.0172
    lgtC0 (0)b2 (2.6)1.740.3469
  • a PR, prevalence ratio. Prevalence ratios were calculated for nonhemolytic strains by using the hemolytic strains as the referent group.

  • b Logit, 0.5 was used instead of 0 for prevalence ratio and statistical calculations.

  • c A P value of <0.05 is considered statistically significant.