Molecular Characterization of Shiga Toxin-Producing Escherichia coli Isolated from Ruminant and Donkey Raw Milk Samples and Traditional Dairy Products in Iran

Table 7

Antibiotic resistance properties in STEC serotypes isolated from raw animal milk and traditional dairy products in Iran (disk diffusion method).

STES serotypes	P10 (%)	TE30 (%)	S10 (%)	C30 (%)	SXT (%)	GM10 (%)	NFX5 (%)	L2 (%)	CF30 (%)	CIP5 (%)	TMP5 (%)	F/M300 (%)	AM10 (%)
O157 (14)	12	11	9	9	8	5	12	9	6	1	10	1	6
O26 (18)	4	14	12	9	10	6	3	10	8	1	5	1	8
O103 (6)	—	3	1	—	1	—	1	2	2	—	2	—	2
O111 (10)	8	4	3	4	3	1	9	3	5	2	7	—	3
O145 (2)	—	—	—	—	1	—	—	—	—	—	—	—	—
O45 (6)	4	1	2	1	1	—	1	1	2	—	5	—	1
O91 (2)	—	—	—	—	—	—	—	—	—	—	1	—	—
O113 (3)	—	1	—	—	—	1	—	—	—	—	1	—	1
O121 (3)	1	1	—	—	1	—	—	1	—	—	—	—	1
O128 (4)	1	1	1	1	—	—	—	1	1	—	1	—	1
Not detected (34)	17	24	10	12	7	7	20	15	11	4	9	2	4
Total (102)	47 (46.07)	60 (58.82)	38 (37.25)	36 (35.29)	32 (31.37)	20 (19.6)	46 (45.09)	42 (41.17)	35 (34.31)	8 (7.84)	41 (40.19)	4 (3.92)	27 (26.47)

In this table P10: penicillin (10 u/disk); TE30: tetracycline (30 𝜇g/disk); S10: streptomycin (10 𝜇g/disk); C30: chloramphenicol (30 𝜇g/disk); SXT: sulfamethoxazole (25 𝜇g/disk); GM10: gentamycin (10 𝜇g/disk); NFX5: enrofloxacin (5 𝜇g/disk); L2: lincomycin (2 𝜇g/disk); CF30: cephalothin (30 𝜇g/disk); CIP5: ciprofloxacin (5 𝜇g/disk); TMP5: trimethoprim (5 𝜇g/disk); F/M300: nitrofurantoin (300 𝜇g/disk); AM10: ampicillin (10 u/disk).