BMC Microbiology

Table 4 Nature and number of addiction systems according to ESBL type and replicon type identified in the recipient strains

From: Molecular epidemiology of extended-spectrum beta-lactamase-producing Escherichia coli in Tunisia and characterization of their virulence factors and plasmid addiction systems

		Addiction modules, n
ESBL type	n	pemKI ^a	ccdAB	hok-sok ^b	pndAC	vagCD ^c	Total	Mean^d
All	144	84	29	51	5	18	187	1.29
TEM-26	2	2	0	0	0	0	2
SHV	39	12*	9	7*	0	3	31	0.79
SHV-2a	9	1					1
SHV-12	30	11	9	7	0	3	30	1.00
CTX-M	103	70	20	44	5	15	154	1.46
CTX-M-14	15	6	0	0	2	0	8	0.53
CTX-M-15	88	64	20	44	3	15	143	1.62
Replicon type	n	pemKI ^e	ccdAB ^f	hok-sok ^g	pndAC	vagCD ^h	Total	Meanⁱ
A/C	5	0	0	0	0	0	0
N	4	0	0	0	0	0	0
L/M	14	9	0	0	0	0	9	0.64
IND	15	4	0	1	0	0	5	0.33
I1	5	2	0	0	5	2	9	1.80
HI2	16	0	0	0	0	2	2	0.12
F	85	69	29	50	0	14	162	1.90
SHV	12	10	9	6	0	1	26	2.16
CTX-M	73	59	20	44	0	13	136	1.87
FII	49	40	1	32	0	1	74	1.51
CTX-M-15	48					1
FII-FIB	4	2	1	2	0	0	5	1.25
SHV-2a	1	0	0	0	0	0
CTX-M-15	3	2	1	2	0	0
FII-FIA-FIB	18	15	14	11	0	9	49	2.72
SHV-12	3	3	2	3		0
CTX-M-15	15	12	12	9		9
FII-FIA	9	8	8	3	0	4	23	2.55
SHV-12	5	5	4	1		1
CTX-M-15	4	3	4	2		3
FIA-FIB	5	4	5	2	0	0	11	2.20
SHV-12	3	2	3	2
CTX-M15	2	2	2	0

^apemKI: CTX-M vs SHV, p < 0.001; CTX-M-15 vs other ESBLs, p < 0.001.
^bhok-sok: CTX-M vs SHV, p < 0.01; CTX-M-15 vs other ESBLs, p < 0.001.
^cvagCD: CTX-M vs SHV, p =0.23; CTX-M-15 vs other ESBLs, p = 0.03.
^d Mean: CTX-M vs SHV, p <0.001; CTX-M-15 vs other ESBLs, p < 0.001.
^epemKI: IncF vs other plasmids, p < 0.001.
^fccdAB: IncF vs other plasmids, p < 0.001.
^ghok-sok: IncF vs other plasmids, p < 0.001.
^hvagCD: IncF vs other plasmids, p = 0.08, vagCD: IncF and IncI1 vs other plasmids, p = 0.01.
ⁱ Mean: IncF vs other plasmids, p < 0.001.

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