Table 2 Distribution of Listeria species by source in Gondar town
Number and percentage of Listeria species isolated from the food items examined | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Listeria species isolated | Raw meat (N) | Minced beef (N) | Fish (N) | Pizza(N) | Pasteurized milk (N) | Raw milk (N) | Cottage cheese(N) | Ice cream(N) | Cream cake(N) | Total (N) | Prevalence (%) |
L.monocytogenes | 4 | 3 | 3 | 2 | 0 | 2 | 0 | 3 | 7 | 24 | 6.25 |
L. ivanovii | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0.52 |
L. innocua | 19 | 2 | 5 | 4 | 0 | 7 | 3 | 4 | 4 | 48 | 12.5 |
L. seeligeri | 2 | 0 | 2 | 0 | 0 | 1 | 0 | 0 | 0 | 5 | 1.3 |
L. welshimeri | 4 | 1 | 1 | 1 | 0 | 2 | 0 | 0 | 0 | 9 | 2.3 |
L. grayi | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 2 | 0.5 |
L. murrayi | 0 | 0 | 2 | 0 | 0 | 0 | 2 | 2 | 0 | 6 | 1.6 |
Total positive | 31 | 6 | 13 | 7 | 0 | 14 | 5 | 9 | 11 | 96 | 25 |
Sample examined | 60 | 25 | 50 | 24 | 50 | 50 | 40 | 20 | 65 | 384 | |
Prevalence (%) | 51.6 | 24 | 26 | 29.1 | 0.0 | 25 | 12.5 | 45 | 16.9 | 25 | |