Table 5 Prevalence distribution of virulence toxins of human pathogenic Vibrio spp. by PCR (relative risk and attributable risk), odds ratios in surface waters of each district.
Name of virulence toxins | Genes | Isolate tested | Virulence toxins | 95% CI of p LL; UL | RR | aR | Odds ratios | p-value |
|---|---|---|---|---|---|---|---|---|
Heat stable enterotoxin | stn | 56 | 46 (82.10) | 70.48–90.56 | 4.60 | 64.29 | 1.00 | – |
Virulence-correlated gene | vcgCPI | 46 | 40 (87.00) | 74.83–94.54 | 6.67 | 73.91 | 0.45 | 1.000 |
Virulence-correlated gene | vcgEP2 | 46 | 0 (0.00) | 0–6.3 | 0.00 | − 100 | 0.00 | 0.000 |
Extracellular haemolysin gene | vfh | 30 | 21 (70.00) | 15.73–47.97 | 2.33 | 40 | 0.51 | 0.917 |
Heme utilization protein gene | hupO | 30 | 5 (16.70) | 6.37–33.15 | 0.20 | − 66 | 0.04 | 0.000 |
Haemolysin toxin | vfpA | 30 | 0 (0.00) | 0–9.50 | 0.00 | − 100 | 0.00 | 0.000 |
Thermostable direct hemolysin-related gene | trd | 21 | 0 (0.00) | 0–13.29 | 0.00 | − 100 | 0.00 | 0.000 |
Thermostable direct hemolysin | trh | 21 | 0 (0.00) | 0–13.29 | 0.00 | − 100 | 0.00 | 0.000 |
Flagellar genes | flaE | 21 | 0 (0.00) | 0–13.29 | 0.00 | − 100 | 0.00 | 0.000 |
Outer membrane proteins | ompU | 5 | 0 (0.00) | 0–45.07 | 0.00 | − 100 | 0.00 | 0.001 |
Zonula occludens toxin | zot | 5 | 0 (0.00) | 0–45.07 | 0.00 | − 100 | 0.00 | 0.001 |
Protease gene | hylA | 5 | 0 (0.00) | 0–45.07 | 0.00 | − 100 | 0.00 | 0.001 |
Total | 316 | 112 (35.44) |
