. 2021 Feb 25;11:4588. doi: 10.1038/s41598-021-84149-1

Table 2.

Distribution of virulence markers among Campylobacter jejuni strains, according to the source of isolation.

Source of isolation		Frequency (%) of positive of strains (n/N)
Source of isolation		flaA	cadF	cdtA	cdtB	cdtC	cdtABC	iam	virB11	wlaN
Cloacal swab (n = 5)		80 (4/5)^a	80 (4/5)^a	80 (4/5)^a	100 (5/5)^a	100 (5/5)^a	60 (3/5)^a	0	40 (2/5)^a	0
Swab of broiler transportation cage (n = 3)		66.7 (2/3)^a	100 (3/3)^a	100 (3/3)^a	66.7 (2/3)^a	100 (3/3)^a	66.7 (2/3)^a	0	0	33.3 (1/3)^a
Broiler carcasses through slaughter process (n = 115)	Scalding (n = 3)	66.7 (2/3)^a	33.3 (1/3)^a	66.7 (2/3)^a	33.3 (1/3)^a	33.3 (1/3)^a	33.3 (1/3)^a	0	0	0
	Plucking (n = 9)	100 (9/9)^a	100 (9/9)^a	100 (9/9)^a	100 (9/9)^a	100 (9/9)^a	100 (9/9)^a	0	33.3 (3/9)^a	33.3 (3/9)^a
	Evisceration (n = 7)	85.7 (6/7)^a	71.4 (5/7)^a	85.7 (6/7)^a	85.7 (6/7)^a	85.7 (6/7)^a	85.7 (6/7)^a	0	28.6 (2/7)^a	0
	Spray-washing (n = 7)	71.4 (5/7)^a	57.1 (4/7)^a	71.4 (5/7)^a	85.7 (6/7)^a	100 (7/7)^a	71.4 (5/7)^a	0	0	28.6 (2/7)^a
	Cooled carcasses (n = 49)	77.6 (38/49)^a	79.6 (39/49)^a	83.7 (41/49)^a	75.5 (37/49)^a	89.8 (44/49)^a	69.4 (34/49)^a	0	16.3 (8/49)^a	12.2 (6/49)^a
	Cooled cuts (n = 40)	80 (32/40)^a	80 (32/40)^a	92.5 (37/40)^a	87.5 (35/40)^a	97.5 (39/40)^a	87.5 (35/40)^a	0	32.5 (13/40)^a	0
Chiller tank processing water (n = 17)		70.6 (12/17)^a	70.6 (12/17)^a	70.5 (12/17)^a	70.6 (12/17)^a	88.2 (15/17)^a	52.9 (9/17)^a	0	17.6 (3/17)^a	17.6 (3/17)^a

Different letters in the same column indicate significant differences (p < 0.005) among source of isolation (Fisher’s exact test; adjusted p-value).