| Sampling site | Number of samples collected | E. coli+ | Klebsiella spp.+ | L. monocytogenes+ | Total Number of isolates |
| Kibera | 91 | 61 (67%) | 8 (8.7%) | 3 (3.3%) | 72 (79.1%) |
| Lang’ata | 93 | 55 (59%) | 5 (5.4%) | 0 (0) | 60 (64.5%) |
| Karen | 86 | 46 (53%) | 6 (6.9% | 0 (0) | 52 (60.4%) |
| Total | 270 | 163 (60.3%) | 19 (7.0%) | 3 (1.1%) | 185 (68.5%) |