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Table 3 Frequency of ExPEC associated virulence genes (PCR screening)

From: High frequency of hybrid Escherichia coli strains with combined Intestinal Pathogenic Escherichia coli (IPEC) and Extraintestinal Pathogenic Escherichia coli (ExPEC) virulence factors isolated from human faecal samples

ExPEC associated VAG Comment Frequency
iss Increased serum survival gene 48.8%
traT Gene encoding complement resistance protein 45.2%
fyuA Ferric yersiniabactin uptake receptor gene 42.3%
iucD Aerobactin biosynthesis gene 24.4%
iutA Ferric aerobactin receptor gene 23.8%
sitA Iron/manganese transport system periplasmic binding protein gene 23.2%
kpsS Capsule polysaccharide export protein gene 18.5%
tsh Temperature-sensitive hemagglutinin autotransporter gene 15.5%
iroC Salmochelin siderophore system gene 12.5%
vat Vacuolating autotransporter toxin gene 11.3%
fbpB Gene associated with urinary tract infections 10.1%
sat Secreted autotransporter toxin gene 9.5%
ibeA Invasion protein gene 8.3%
etsA Macrolide-specific efflux protein gene 4.2%
cnf1 Gene encoding the cytotoxic necrotizing factor 1 3.6%
sfaS S-fimbrial adhesin gene 1.8%
papC P-fimbriae outer membrane usher protein gene 1.8%
tosA Repeat-in-toxin gene 1.8%
cnf2 Gene encoding the cytotoxic necrotizing factor 2 0.6%
cnf3 Gene encoding the cytotoxic necrotizing factor 3 NDa
  1. aNot detected