Table 4.

Combination of virulence genes identified in E. coli strains isolated from the blood of cancer patients and the feces of healthy volunteers

Gene combination% (no.) of positive strains in:P valuea
Blood (n = 155)Feces (n = 70)
No known virulence factors57 (89)81.4 (57)<0.05
cnf1 + papC +hlyC 19 (30)4.2 (3)<0.05
cnf1 +papC 0.6 (1)0
cnf1 +hlyC 4 (6)0
papC +hlyC 1.2 (2)1.4 (2)NSb
cnf1 00
papC 16 (25)11.4 (8)NS
hlyC 1.2 (2)0
  • a Chi-square test.

  • b NS, not significant.