Table 1.

C. fetus subsp. fetus (Cff) and subsp. venerealis (Cfv) virulence factors compared with 4 other Campylobacter spp.

Putative virulence type	Other spp.a	Cff	Cfv*
Bacterial adherence	9	3b	4b
Motility	55–66	41	46
Two-component system genes	11–15	16	14
Toxin and resistance	15–20	9c	7c
Membrane proteins	185–218	209	202

Summary of C. fetus virulence gene ORFs in C. fetus subsp. fetus (Cff) and subsp. venerealis (Cfv) compared with 4 other Campylobacter spp. (adapted from Fouts et al).

^a C. jejuni, C. lari, C. upsaliensis, C. coli (Fouts et al. 2005)

^bCff – PEB1 (3) – no other adherence homologues found; Cfv ORFs – PEB1(2), cadF(0), jlpA (1-poor homology), Fibronectin binding (1), 43-kDA MOMP (0)

^c not including resistance genes for Cff and Cfv, toxin subunit ORFs only

*N.B. Cfv genome incomplete