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Table 2 Distribution of blaCTX-M β-lactamase genes among ESBL-producing Enterobacteriaceae isolates

From: Sequence analysis of genes mediating extended-spectrum beta-lactamase (ESBL) production in isolates of Enterobacteriaceae in a Lagos Teaching Hospital, Nigeria

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)