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Table 1 Frequency, distribution and combinations of bla genes among screen and ESBL gene positive Gram-negative isolates

From: Prevalence and antibiotic susceptibility pattern of CTX-M type extended-spectrum β-lactamases among clinical isolates of gram-negative bacilli in Jimma, Ethiopia

Screen positive species Total ESBL Among ESBL gene positive isolates
    SHV E240K + G238S alone CTX-M alone CTX-M + SHV
E240K + G238S
Total CTXM
  n: % n: % n: % n: % n: %
E. coli (n = 13) 13 100 0 0 12 92.3 1 7.7 13 100
K. pneumoniae (n = 31) 30 96.8 0 0 29 96.7 1 3.3 30 100
E. cloacae (n = 14) 12 85.7 3 25.0 9 75.0 0 0 9 75.0
other Enterobacteriaceaea (n = 15) 12 80.0 0 0 12 100 0 0 12 100
P. aeruginosa (n = 14) 3 21.4 0 0 3 100 0 0 3 100
other
Non-fermentersb
(n = 25)
1 4 0 0 1 100 0 0 1 100
Total (n = 112) 71 63.4 3 4.2 66 92.9 2 2.8 68 95.8
  1. aincludes 3 M. morganii, 4 P. mirablis, 5 P. stuartii,K. oxytoca and 1 E. hermanii
  2. bincludes 17 Acinetobacter species (14 A. baumanii, 2 A. pittii and 1 A. haemolyticus), 3 A. faecalis,S. maltophilia and 1 B. bronchiseptica