Table 2.
Frequency Distribution of Bacterial Species Recovered from Dairy Farms and Slaughterhouse
| Sampling Site | Sampling Source | Prevalence of Bacterial Isolates – Number (%) | ||||
|---|---|---|---|---|---|---|
| E. coli O157:H7 | L. monocytogenes | S. typhimurium | P. aeruginosa | K. pneumoniae | ||
| Dairy farms | BTM | 12 (30) | 8 (20) | 8 (20) | 2 (5) | 10 (25) |
| MU | 10 (25) | 8 (20) | 14 (35) | 4 (10) | 4 (10) | |
| WHSs | 6 (15) | 10 (25) | 10 (25) | 8 (20) | 6 (15) | |
| Total | 23.3 | 21.7 | 26.7 | 11.7 | 16.7 | |
| Beef slaughterhouse | Carcass | 6 (30) | 6 (30) | 6 (30) | 2 (10) | 0 |
| KSs | 8 (40) | 4 (20) | 2 (10) | 4 (20) | 2 (10) | |
| WSs | 2 (10) | 8 (40) | 6 (30) | 4 (20) | 0 | |
| WHSs | 8 (40) | 2 (10) | 4 (20) | 4 (20) | 2 (10) | |
| Total | 30 | 25 | 22.5 | 17.5 | 5 | |
Notes: Number of samples; 120/dairy farm samples, 80/slaughterhouse samples.
Abbreviations: BTM, bulk tank milk; MU, milking utensils; KSs, knives’ swabs; WSs, wall swabs; WHSs, workers’ hands swabs.