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. 2015 Jul 7;15:259. doi: 10.1186/s12879-015-1005-x

Table 2.

Distribution of bla CTX-M β-lactamase genes among ESBL-producing Enterobacteriaceae isolates

Bacterial isolate No. (%) of ESBL-positives (n = 38) No. (%) of isolates harboring bla genes:
bla CTX-M-15 bla TEM-1 bla SHV
(n = 30) (n = 29) (n = 6)
E. coli 21 (55.3) 18 (60.0) 17 (58.6) 2 (33.3)
K. pneumoniae 12 (31.6) 10 (33.3) 9 (31.0) 2 (33.3)
P. mirabilis 3 (7.9) 2 (6.7) 3 (10.4) 0 (0)
M. morganii 1 (2.6) 0 (0) 0 (0) 1 (16.7)
C. freundii 1 (2.6) 0 (0) 0 (0) 1 (16.7)