Table 1 Number of salmonella positive samples from the weekly environmental surveillance of the production line of feed mills in Sweden - before heat treatment; and distribution of positive samples and estimated share of national feed production between 1995 and 2005
Year/Feed producing company | No. of salmonella positive samples before heat treatment (% distribution of positive samples between companies for each year) | Estimated share of national production | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
1995 | 1997 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | Total | ||
A +B | 36 (90%) | 22 (82%) | 45 (94%) | 20 (95%) | 17 (94%) | 21 (66%) | 7 (88%) | 19 (90%) | 187 (87%) | 75% |
C | 4 (10%) | 5 (18%) | 2 (4%) | 1 (5%) | 1 (6%) | 7 (22%) | 0 (0%) | 2 (10%) | 22 (10%) | 15% |
D+E 1) | - | 0 (0%) | 1 (2%) | 0 (0%) | 0 (0%) | 4 (12%) | 1 (12%) | 0 (0%) | 6 (3%) | 10% |
Total | 40 | 27 | 48 | 21 | 18 | 32 | 8 | 21 | 215 | 100% |