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Table 2 Frequency and distribution of CTX-M groups among CTX-M positive Gram-negative bacilli 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

CTX-M positive species CTX-M groups (total) CTX-M group combinations
CTX-M-1 CTX-M-2 CTX-M-8 + 25 CTX-M-9 CTX-M-1 alone CTX-M-1 + 2 CTX-M-1 + 9 CTX-M-1 + 2 + 8 + 25 CTX-M-9 alone
n: % n: % n: % n: % n: % n: % n: % n: % n: %
E. coli (n = 13) 12 92.3 0 0 0 0 2 15.4 11 84.6 0 0 1 7.7 0 0 1 7.7
K. pneumoniae (n = 30) 30 100 1 3.3 0 0 0 0 29 96.7 1 3.3 0 0 0 0 0 0
E. cloacae (n = 9) 9 100 0 0 0 0 0 0 9 100 0 0 0 0 0 0 0 0
Other Enterobacteriaceaea (n = 12) 11 91.7 0 0 0 0 1 8.3 11 91.7 0 0 0 0 0 0 1 8.3
P. aeruginosa (n = 3) 3 100 1 33.3 1 33.3 0 0 2 66.7 0 0 0 0 1 33.3 0 0
Other Non-Fermentersb (n = 1) 1 100 0 0 0 0 0 0 1 100 0 0 0 0 0 0 0 0
Total (n = 68) 66 97.1 2 2.9 1 1.5 3 4.4 63 92.6 1 1.5 1 1.5 1 1.5 2 2.9
  1. aincludes 3 M. morganii, 4 P. mirablis, 2 P. stuartii,K. oxytoca and 1 E. hermanii
  2. bincludes 1 A. faecalis