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. 2005 Sep;11(9):1363–1369. doi: 10.3201/eid1109.041207

Table 2. Distribution of virulence factors.

Virulence factor All isolates (n = 394) Phylogenetic group, n (%)
A (n = 215) B1 (n = 101) B2 (n = 17) D (n = 61)
papA 28 (7) 7 (3) 11 (11) 8 (47)* 2 (3)
papC 29 (7) 8 (4) 11 (11) 8 (47)* 2 (3)
iutA 131 (33) 66 (31) 32 (32) 8 (47) 25 (41)
kpsM II 56 (14) 19 (9) 23 (23) 11 (65)* 3 (5)
hlyD 20 (5) 8 (4) 7 (7) 5 (29)* 0
sfa/focDE 8 (2) 2 (1) 4 (4) 2 (12)* 0
afa/draBC 11 (3) 6 (3) 2 (2) 1 (6) 2 (3)

*p<0.05.