Table 1.
Percentage of Salmonella Typhimurium isolates from cattle showing resistance to individual antimicrobials
| Source | No. of isolates tested | % susceptible to all 16 antimicrobials | % Resistant to AM | % Resistant to C | % Resistant to CF | % Resistant to CIP | % Resistant to N | % Resistant to NA | % Resistant to S | % Resistant to SU | % Resistant to T | % Resistant to TM |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2002 | 139 | 20% | 60% | 60% | 26% | n/a | 1% | 6% | 52% | 68% | 75% | 21% |
| 2003 | 174 | 7% | 79% | 71% | 45% | n/a | 1% | 13% | 68% | 79% | 88% | 33% |
| 2004 | 90 | 11% | 69% | 62% | n/a | 0 | – | 1% | 67% | 76% | 84% | 30% |
| 2005 | 73 | 18% | 74% | 63% | n/a | 0 | 1% | 7% | 64% | 74% | 74% | 14% |
| 2006 | 173 | 17% | 77% | 75% | n/a | 0 | 1% | 0% | 47% | 80% | 80% | 21% |
| 2007 | 87 | 17% | 66% | 54% | n/a | 0 | – | 3% | 53% | 78% | 69% | 5% |
| 2008 | 76 | 6% | 80% | 70% | n/a | 1% | – | 8% | 86% | 87% | 91% | 0% |
| 2009 | 69 | 36% | 54% | 46% | n/a | 6% | – | 6% | 62% | 61% | 61% | 0% |
| 2010 | 64 | 19% | 63% | 47% | n/a | 11% | 2% | 13% | 77% | 75% | 77% | 5% |
| 2011 | 40 | 23% | 70% | 55% | n/a | 3% | 3% | 15% | 70% | 73% | 70% | 15% |
| 2012 | 19 | 32% | 47% | 26% | n/a | 0% | – | 0% | 63% | 63% | 68% | 5% |
| 2013 | 25 | 44% | 32% | 20% | n/a | 0% | – | 16% | 32% | 40% | 48% | 12% |
| 2014 | 27 | 44% | 44% | 41% | n/a | 0% | – | 0% | 37% | 44% | 56% | 0% |