Virulence Profiles, Phylogenetic Background, and Antibiotic Resistance of Escherichia coli Isolated from Turkeys with Airsacculitis

Table 1

Distribution of 225 E. coli strains according to the phylogenetic group and presence of virulence genes.

Group (𝑛)	Prevalence 𝑛 (%)
	𝑖𝑟𝑜𝑁	𝑖𝑠𝑠	𝑐𝑣𝑖/𝑐𝑣𝑎	𝑡𝑠ℎ	𝑣𝑎𝑡	𝑖𝑢𝑐𝐷	𝑖𝑟𝑝2	𝑛𝑒𝑢𝑆	𝑖𝑏𝑒𝐴	𝑝𝑎𝑝𝐶	𝑎𝑠𝑡𝐴	𝑉𝑆^#
A (38)	33 (87)	37 (97)	27 (71)	19 (48)	1 (2)	24 (63)	15 (38)	0 (0)	3 (8)	1 (2)	5 (13)	4.3
B1 (64)	62 (96)	59 (92)	38 (59)	24 (38)	1 (1)	43 (67)	14 (22)	2 (3)	16 (25)	8 (12)	8 (14)	4.2
B2 (112)	109 (97)	105 (93)	81 (72)	80 (71)*	52 (46)*	79 (70)	85 (75)*	40 (36)*	50 (45)*	24 (21)	24 (21)	6.5
D (11)	10 (90)	10 (90)	6 (54)	5 (45)	2 (18)	6 (54)	3 (27)	1 (9)	3 (27)	1 (9)	2 (18)	4.4
Total (225)	214 (95)	211 (93)	152 (67)	128 (56)	56 (24)	152 (67)	116 (51)	43 (19)	71 (31)	34 (15)	39 (17)	5.4

∗Positive association between virulence factor and phylogenetic group (𝑃≤0.05).
#VS: virulence score. A virulence score was calculated for each isolate as the sum of all virulence factors.
𝑃 value was determined using Fisher’s exact test for comparisons among virulence factors and phylogenetic groups.