Table 3
Antimicrobial resistance patterns of E. coli encoding Stx2e gene isolated from weaned piglets in Korea from 2007 to 2016

No.1)	Antimicrobial resistance patterns	No. of isolates
No.1)	Antimicrobial resistance patterns	Before³⁾ (n = 65)	After (n = 79)	Total (n = 144)
0	-	4	-	4

1	GM	1	-	1

2	C-TE	2	-	2
	N-NA	1	-	1
	N-TE	-	1	1
	S-TE	-	1	1

3	N-AM-C	1	-	1
3	S-C-TE	-	1	1

4	N-AM-AMC-TE	-	2	2
	N-AM-C-TE	1	-	1
	S-AM-C-TE	1	3	4
	S-C-CL-TE	-	1	1
	S-N-NA-AMC	-	1	1

5	GM-CF-AM-C-TE	1	-	1
	GM-S-AM-C-TE	1	-	1
	GM-S-N-NA-TE	-	1	1
	NA-AM-AMC-C-TE	1	-	1
	S-AM-AMC-C-TE	-	1	1
	S-AM-SXT-C-TE	-	1	1
	S-CF-AMC-C-TE	-	1	1
	S-CF-AM-C-TE	-	1	1
	S-NA-AM-C-TE	-	1	1
	S-N-AM-C-TE	-	1	1
	S-N-CF-AM-TE	-	1	1
	S-N-CIP-AM-TE	-	1	1

6	GM-AM-AMC-SXT-C-TE	-	2	2
	GM-N-NA-AM-C-TE	-	1	1
	GM-S-N-NA-AMC-TE	1	-	1
	N-CIP-NOR-SXT-C-TE	-	1	1
	S-AM-AMC-SXT-C-TE	-	1	1
	S-NA-AM-SXT-C-TE	-	1	1
	S-NA-CIP-AM-C-TE	-	1	1
	S-N-AM-AMC-C-TE	-	2	2
	S-N-AM-SXT-C-TE	1	2	3
	S-N-CF-AM-C-TE	1	1	2

7	CF-NA-AM-AMC-SXT-C-TE	1	-	1
	CF-NA-CIP-AM-AMC-SXT-TE	1	-	1
	GM-NA-AM-SXT-C-CL-TE	-	1	1
	GM-N-NA-AM-AMC-C-TE	-	1	1
	GM-S-N-AM-AMC-C-TE	-	1	1
	GM-S-N-AM-SXT-C-TE	1	1	2
	GM-S-N-CF-AM-C-TE	-	1	1
	GM-S-N-NA-AM-AMC-C	-	1	1
	GM-S-N-NA-AM-C-TE	1	-	1
	N-CF-NA-AM-SXT-C-TE	-	1	1
	N-NA-CIP-NOR-SXT-C-TE	1	-	1
	S-NA-AM-AMC-SXT-C-TE	-	1	1
	S-N-CF-AM-AMC-C-TE	-	2	2
	S-N-CF-NA-AM-C-TE	-	1	1
	S-N-NA-AM-AMC-C-TE	-	1	1
	S-N-NA-AM-SXT-C-TE	1	-	1

8	GM-N-NA-CIP-NOR-SXT-C-TE	1	-	1
	GM-S-N-AM-AMC-C-CL-TE	-	1	1
	GM-S-N-CF-AM-AMC-C-TE	-	1	1
	GM-S-N-CF-AM-SXT-C-TE	1	-	1
	GM-S-N-CF-NA-AM-C-TE	-	1	1
	GM-S-N-NA-AM-SXT-C-TE	3	-	3
	S-CF-CZ-NA-AM-SXT-C-TE	-	1	1
	S-CF-NA-AM-AMC-SXT-C-TE	-	1	1
	S-N-CF-AM-AMC-C-CL-TE	-	1	1
	S-N-CF-AM-SXT-C-CL-TE	1	-	1
	S-N-CF-NA-AM-SXT-C-TE	-	2	2

9	GM-CF-NA-NOR-AM-SXT-C-CL-TE	1	-	1
	GM-S-N-CF-NA-AM-AMC-C-TE	-	1	1
	GM-S-N-CF-NA-AM-SXT-C-TE	1	-	1
	S-CF-NA-AM-AMC-SXT-C-CL-TE	-	1	1
	S-CF-NA-CIP-NOR-AM-AMC-C-TE	-	1	1
	S-N-NA-CIP-NOR-AM-AMC-C-TE	-	1	1

10	GM-S-N-CF-CZ-AM-AMC-SXT-C-TE	-	1	1
	GM-S-N-CF-NA-AM-AMC-C-CL-TE	-	1	1
	GM-S-N-CF-NA-CIP-NOR-SXT-C-TE	1	-	1
	GM-S-N-NA-CIP-NOR-AM-AMC-C-TE	-	1	1
	GM-S-N-NA-CIP-NOR-AM-SXT-C-TE	1	1	2
	S-CF-CZ-NA-CIP-NOR-AM-SXT-C-TE	-	1	1
	S-CF-NA-CIP-NOR-AM-AMC-SXT-C-TE	-	1	1
	S-N-CF-CZ-NA-CIP-AM-SXT-C-TE	-	1	1

11	GM-S-N-CF-NA-CIP-NOR-AM-AMC-C-TE	-	3	3
11	GM-S-N-CF-NA-CIP-NOR-AM-SXT-C-TE	2	-	2

12	GM-S-N-CF-NA-CIP-NOR-AM-AMC-C-CL-TE	-	1	1
	GM-S-N-CF-NA-CIP-NOR-AM-AMC-SXT-C-TE	2	-	2
	GM-S-N-CF-NA-CIP-NOR-AM-SXT-C-CL-TE	-	1	1
	N-CF-CZ-FOX-NA-CIP-NOR-AM-AMC-SXT-C-TE	1	-	1

13	GM-N-CF-CZ-FOX-NA-CIP-NOR-AM-AMC-SXT-C-TE	-	1	1
	GM-S-CF-CZ-FOX-NA-CIP-NOR-AM-AMC-SXT-C-TE	-	1	1
	GM-S-CF-CZ-NA-CIP-NOR-AM-AMC-SXT-C-CL-TE	-	2	2
	GM-S-N-CF-CZ-FOX-NA-CIP-NOR-AM-AMC-C-TE	2	-	2
	GM-S-N-CF-CZ-FOX-NA-CIP-NOR-AM-AMC-SXT-C	2	-	2
	GM-S-N-CF-CZ-NA-CIP-NOR-AM-AMC-SXT-C-TE	2	-	2
	S-CF-CZ-FOX-NA-CIP-NOR-AM-AMC-SXT-C-CL-TE	-	1	1

14	GM-N-CF-CZ-FOX-NA-CIP-NOR-AM-AMC-SXT-C-CL-TE	-	1	1
		-	1	1
	GM-S-N-CF-CZ-FOX-NA-CIP-NOR-AM-AMC-SXT-C-TE	21	5	26

15	GM-S-N-CF-CZ-FOX-NA-CIP-NOR-AM-AMC-SXT-C-CL-TE	-	1	1

GM: gentamicin, S: streptomycin, N: neomycin, CF: cephalothin, CZ: cefazolin, FEP: cefepime, FOX: cefoxitin, NA: nalidixic acid, CIP: ciprofloxacin, NOR: norfloxacin, AM: ampicillin, AMC: amoxicillin / clavulanic acid, SXT: trimethoprim / sulfamethoxazole, C: chloramphenicol, CL: colistin, TE: tetracycline
No. of antimicrobials which is resistant to E. coli encoding Stx2e gene