Table 2.: Strains Positive for the Presence of Virulence Genes as Determined by PCR. These Values are Presented as Percentages

Virulence Genes
Group fimA papA crl csgA tsh lpfAO141 lpfAO154 iha fyuA irp-2 iucA fepC sitA
N 16.7 0.0 10.0 0.0 10.0 3.3 20.0 13.3 13.3 13.3 6.7 26.7 26.7
S 29.2 25.0 29.2 87.5 25.0 25.0 58.3 20.8 16.7 20.8 45.8 29.2 12.5
H 64.3 35.7 50.0 64.3 50.0 0.0 100.0 0.0 57.1 71.4 42.9 92.9 28.6
O 27.3 0.0 36.4 54.5 0.0 0.0 81.8 18.2 36.4 36.4 0.0 45.5 18.2

N = commensal strains (AFEC), S = septicemia strains, H = swollen head syndrome strains, O = omphalitis strains.