Antimicrobial resistance and integron gene cassette arrays in commensal Escherichia coli from human and animal sources in IRI

Table 4 Gene cassette arrays of class II integrons in E. coli from different species

Species/cassette array	No. (%) of the human isolates carrying gene cassette array	No. (%) of the chicken isolates carrying gene cassette array	No. (%) of the sheep isolates carrying gene cassette array	No. (%) of the cattle isolates carrying gene cassette array	Total^a
dfrA1	1 (2)	1 (2)	2 (4)	0 (0)	4
dfrA1-sat2-aadA1	0 (0)	2 (4)	1 (2)	1 (2)	4
dfrA1-sat1-aadA1	1 (2)	3 (0)	0 (0)	0 (0)	4
at-sat1-aadA1	1 (2)	2 (4)	0 (0)	1 (2)	4
Total	3 (6)	8 (16)	3 (6)	2 (4)	16

^aThe number of the isolates carrying intII, is 19, however, in three class II integron positive isolates, the cassette arrays could not be detected by PCR

ISSN: 1757-4749