Table 3. Significant interactions among virulence factors in isolates that grew in Karmali medium (n = 146).
| % | CL95 | χ2 | P | |
|---|---|---|---|---|
| cadF negative | clpP = 54.5 | (26.46–80.04) | ||
| cadF positive | clpP = 99.3 | (96.21–99.90) | 23.1 | <0.001 |
| cdtB negative | clpP = 64.3 | (37.11–84.72) | ||
| cdtB positive | clpP = 99.2 | (96.23–99.89) | 15.6 | <0.001 |
| cdtB negative | htrB = 42.9 | (20.61–68.28) | ||
| cdtB positive | htrB = 96.2 | (91.91–98.40) | 21.6 | <0.001 |
Almost all the C. jejuni-positive colonies possessed all five virulence factors (104/117 = 88.9%) and there was just one colony that had a single virulence factor (ciaB). In contrast, only 17/29 C. jejuni-negative colonies (58.6%) had all five virulent factors and 3 had just one (again ciaB in each case).