Genes | E. coli (n = 211) | K. pneumoniae (n = 53) | Citrobacter spp. (n = 40) | Proteus spp. (n = 7) | Total (n = 311) |
---|---|---|---|---|---|
blaCTX-M group | |||||
CTX-M-15 alone | 38 (18%) | 0 (0%) | 0 (0%) | 0 (0%) | 38 (12.2%) |
CTX-M-1 alone | 31(14.7%) | 6 (11.3%) | 3 (7.5%) | 1 (14.3%) | 41 (13.2%) |
CTX-M-1 + 15 | 32 (15.2%) | 35 (66%) | 30 (75%) | 2 (28.5%) | 99 (31.8%) |
CTX-M-8 alone | 59 (27.9%) | 0 (0%) | 0 (0%) | 0 (0%) | 59 (19%) |
CTX-M-8 + 15 | 10 (4.7%) | 0 (0%) | 0 (0%) | 3 (42.8%) | 13 (4.2%) |
CTX-M-2 alone | 1 (.5%) | 1 (1.8%) | 0 (0%) | 0 (0%) | 2 (0.6%) |
CTX-M-2 + 15 | 0 (0%) | 0 (0%) | 2 (5%) | 0 (0%) | 2 (0.6%) |
Total | 171 (81%) | 42 (79.2%) | 35 (87.5%) | 6 (85.7%) | 254 (81.7%) |
Other β-lactamase genes | |||||
blaSHV only | 15(7.1%) | 0(0%) | 1(2.5%) | 1(14.2%) | 17 (5.4%) |
blaTEM only | 13(6.1%) | 3(5.6%) | 0 (0%) | 0(0%) | 16(5.1%) |
blaTEM + SHV | 10(4.7%) | 7(13.2%) | 4(10%) | 0(0%) | 21(6.7%) |
Combinations | |||||
blaSHV+ CTX-M | 55(26.1%) | 20(37.7%) | 7(17.5%) | 1(14.2%) | 83(26.7%) |
blaTEM + CTX-M | 102(48.3%) | 13(24.5%) | 21(52.5%) | 4(57.1%) | 140(45%) |
TEM + SHV + CTX-M | 1(.4%) | 5(9.4%) | 5(12.5%) | 1(14.2%) | 12(2.2%) |
CTX-M genes only | 13(6.1%) | 4(7.5%) | 2(5%) | 0(0%) | 19 (6.1%) |