Table 3.
Species distribution according to their geographical origin and source of isolation. FPP1 and FPP2: food-processing plants from the Basque Country; FPP3: food-processing plant from the Valencian Community; FPP4: food-processing plant from Catalonia; and FPP5: food-processing plant from Andalusia. FPE: food-processing equipment; Sew.: sewage; and /: not sampled. p-values from Χ2 analysis are shown.
| Environmental | Food | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| FPE | Floor | Sew. | Total | Beef | Pork | Poultry | Total | |||
| FPP1 | L. monocytogenes | 1 | 0 | 6 | 7 | 3 | 4 | / | 7 | |
| L. innocua | 1 | 0 | 4 | 5 | 2 | 3 | / | 5 | ||
| L. welshimeri | 0 | 0 | 2 | 2 | 0 | 1 | / | 1 | ||
| FPP2 | L. monocytogenes | 5 | 1 | 4 | 10 | 0 | 1 | 0 | 1 | |
| L. innocua | 3 | 0 | 0 | 3 | 1 | 2 | 2 | 5 | ||
| L. welshimeri | 0 | 2 | 4 | 6 | 0 | 0 | 2 | 2 | ||
| FPP3 | L. monocytogenes | / | / | / | / | / | / | 2 | 2 | |
| L. innocua | / | / | / | / | / | / | 1 | 1 | ||
| L. welshimeri | / | / | / | / | / | / | 2 | 2 | ||
| FPP4 | L. monocytogenes | / | / | / | / | 8 | 0 | 6 | 14 | |
| L. innocua | / | / | / | / | / | / | / | / | ||
| L. welshimeri | / | / | / | / | / | / | / | / | ||
| FPP5 | L. monocytogenes | 1 | 0 | 0 | 1 | / | 1 | / | 1 | |
| L. innocua | / | / | / | / | / | 0 | / | 0 | ||
| L. welshimeri | / | / | / | / | / | 0 | / | 0 | ||
| Environmental | Food | Environmental + Food | ||||||||
| Strains | FPP1 | FPP2 | FPP1 | FPP2 | FPP1 | FPP2 | ||||
| L. monocytogenes | 7 | 10 | 7 | 1 | 14 | 11 | ||||
| L. innocua | 5 | 4 | 5 | 4 | 10 | 8 | ||||
| L. Welshimeri | 2 | 6 | 1 | 2 | 3 | 8 | ||||
| Χ2 analysis (p-values) | 0.442 | 0.177 | 0.489 | |||||||