Table. Prevalence of ceftiofur resistance among human and retail chicken Salmonella serovar Heidelberg isolates and retail chicken Escherichia coli isolates from Canadian provinces surveyed during 2003–2008.
| Isolate/province | Prevalence of ceftiofur resistance, % (no. resistant isolates/total no. isolates tested) |
|||||
|---|---|---|---|---|---|---|
| 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | |
| Human clinical Salmonella Heidelberg | ||||||
| Québec | 31 (52/167) | 36 (42/116) | 35 (37/106) | 8 (8/96) | 6 (4/63) | 12 (8/65) |
| Ontario | 18 (31/172) | 38 (70/185) | 30 (42/140) | 10 (12/122) | 22 (21/94) | 32 (7/22) |
| Saskatchewan | 0 (0/15) | 7 (1/14) | 0 (0/11) | 0 (0/7) | ||
| British Columbia |
|
|
|
|
23 (3/13) |
19 (3/16) |
| Chicken retail Salmonella Heidelberg | ||||||
| Québec | 65 (13/20) | 62 (18/29) | 33 (4/12) | 7 (1/14) | 19 (6/32) | 18 (7/38) |
| Ontario | 16 (3/19) | 58 (19/33) | 27 (3/11) | 21 (3/14) | 21 (9/42) | 14 (3/21) |
| Saskatchewan | 0 (0/5) | 13 (1/8) | 0 (0/9) | 8 (1/12) | ||
| British Columbia |
|
|
|
|
50 (2/4) |
67 (2/3) |
| Chicken retail E. coli | ||||||
| Québec | 32 (36/111) | 34 (54/158) | 25 (35/142) | 6 (8/135) | 13 (17/128) | 18 (24/131) |
| Ontario | 18 (24/136) | 21 (32/150) | 17 (25/145) | 22 (34/152) | 22 (35/157) | 24 (36/150) |
| Saskatchewan | 4 (3/82) | 6 (5/85) | 13 (10/75) | 20 (18/92) | ||
| British Columbia | 29 (12/42) | 49 (34/70) | ||||