TABLE 3.
The phylogenetic distribution of ESBL producing E. coli isolated from clinical samples originating four health facilities in Ethiopia.
| Phylogenetic group | Number of isolates (%) per β-lactamase gene type | |||||
| CTX-M-15 (n = 157) | Other Group-1 CTX-Ms (n = 22) | Group-9 CTX-Ms (n = 12) | SHV (n = 8) | TEM-1 (n = 150) | OXA-1 (n = 161) | |
| Ab | 41 (26.1) | 3 (13.6) | 3 (25.0) | 2 (25.0) | 34 (22.7) | 38 (23.6) |
| B1 | 4 (2.6) | 2 (9.1) | 0 | 0 | 8 (5.3) | 4 (2.5) |
| B2a,b | 69 (43.9) | 8 (36.4) | 8 (66.7) | 4 (50.0) | 64 (42.7) | 76 (47.2) |
| Ca,b | 28 (17.8) | 3 (13.6) | 1 (8.3) | 1 (12.5) | 26 (17.3) | 25 (15.5) |
| D | 6 (3.8) | 3 (13.6) | 0 | 0 | 9 (6.0) | 8 (5.0) |
| Fb | 4 (2.6) | 2 (9.2) | 0 | 1 (12.5) | 5 (3.3) | 6 (3.7) |
| U | 5 (3.2) | 1 (4.4) | 0 | 0 | 4 (2.7) | 4 (2.5) |
aTwo isolates belonging to phylogenetic B2 and one isolate in phylogenetic group C were detected for two variants of CTX-Ms.
bTwo group A, three group B2, one group C, and 1 group F were detected for CTX-M-15 and variants of SHV.