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Table 3 Gene cassette arrays of class I integrons in E. coli from different species

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

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 Totala
dfrA1 1 (2) 4 (8) 0 (0) 1 (2) 6
dfrA5 0 (0) 3 (6) 1 (2) 0 (0) 4
dfrA7 1 (2) 2 (4) 0 (0) 0 (0) 3
dfrA12 2 (4) 3 (6) 1 (2) 1 (2) 7
aadA1 3 (6) 10 (20) 4 (8) 1 (2) 18
aadA4 0 (0) 2 (4) 1 (2) 0 (0) 3
dfrA17-aadA1 0 (0) 2 (4) 0 (0) 0 (0) 2
aadA1-aadB 1 (2) 2 (4) 0 (0) 0 (0) 3
dfrA12orfFaadA2 0 (0) 2 (4) 1 (2)  0 (0) 3
Total 8 (16) 30 (60) 8 (16) 3 (6) 49
  1. aThe number of the isolates carrying intI, is 55, however, in six class I integron positive isolates, the cassette arrays could not be detected by PCR