Skip to main content

Table 8 Characterization and frequency of detected ESBL and carbapenemase enzymes among the Gram-negative isolates

From: Prevalence and characterization of antimicrobial resistance among gram-negative bacteria isolated from febrile hospitalized patients in central Ethiopia

Bacterial species Resistance genes % (n)
ESBL enzymes CP enzymes
Any ESBL CTX-M-1 group TEM-group SHV-group CTX-M-9 group Any CP NDM-1 OXA-51
E. coli (n = 13) 92.3 (12) 69.2 (9) 76.9 (10) 7.7 (1) 0 0 0 0
K. pneumoniae (n = 6) 100 (6) 83.3 (5) 50.0 (3) 83.3 (5) 0 16.7 (1) 16.7 (1) 0
P. aeruginosa (n = 4) 50.0 (2) 25.0 (1) 50.0 (2) 0 0 0 0 0
Other* (n = 4) 75.0 (3) 0 50.0 (2) 0 50.0 (2) 25.0 (1) 25.0 (1) 25.0 (1)
All GNB (n = 27) 81.5 (22) 55.6 (15) 63.0 (17) 22.2 (6) 7.4 (2) 7.4 (2) 7.4 (2) 3.7 (1)
  1. CP carbapenemase
  2. *Other isolates: R. planticola (n = 1) and R. ornithinolytica (n = 1): both positive for CTX-M-9 group; Salmonella Typhi (n = 1): no ESBL- or CPE-production; and A. baumannii (n = 1): positive for OXA-51 and NDM-1