TABLE 2.
Percentage resistance of Salmonella isolated from clinical companion animalsa
| Antimicrobialsb | 1997 | 1998 | 1999 | 2000 | 2001c | 2002 | 2003 | 2004 | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dogn = 38 | Catn = 28 | Dogn = 57 | Catn = 29 | Dogn = 57 | Catn = 25 | Dogn = 44 | Catn = 17 | Dogn = 64 | Dogn = 92 | Catn = 19 | Dogn = 68 | Catn = 32 | Dogn = 53 | Catn = 22 | |
| Amoxicillin/clavulanic acid | 0 | 10.7 | 7.0 | 6.9 | 10.5 | 8.0 | 13.6 | 17.6 | 29.7 | 38.0 | 10.5 | 20.6 | 3.1 | 26.4 | 18.2 |
| Ampicillin | 31.6 | 53.6 | 24.6 | 48.3 | 26.3 | 40.0 | 34.1 | 58.8 | 35.9 | 43.5 | 26.3 | 29.4 | 25.0 | 30.2 | 31.8 |
| Apramycin | 0 | 3.6 | 1.8 | 0 | 0 | 4.0 | 4.5 | 0 | 1.6 | ||||||
| Cefoxitin | 11.4 | 17.6 | 29.7 | 37.0 | 10.5 | 20.6 | 3.1 | 22.6 | 13.6 | ||||||
| Ceftiofur | 0 | 10.7 | 7.0 | 6.9 | 8.8 | 8.0 | 11.4 | 17.6 | 29.7 | 37.0 | 10.5 | 20.6 | 3.1 | 22.6 | 13.6 |
| Cephalothin | 0 | 10.7 | 8.8 | 13.8 | 14.0 | 8.0 | 11.4 | 23.5 | 29.7 | 39.1 | 10.5 | 26.5 | 9.4 | ||
| Chloramphenicol | 13.2 | 28.6 | 21.1 | 20.7 | 17.5 | 36.0 | 25.0 | 35.3 | 29.7 | 43.5 | 18.5 | 26.5 | 9.4 | 28.3 | 22.7 |
| Gentamicin | 0 | 0 | 10.5 | 6.9 | 1.8 | 12.0 | 6.8 | 11.8 | 9.4 | 5.4 | 5.3 | 17.6 | 3.1 | 1.9 | 9.1 |
| Kanamycin | 18.4 | 32.2 | 12.3 | 27.6 | 12.3 | 24.0 | 9.1 | 35.3 | 10.9 | 20.7 | 5.3 | 19.1 | 12.5 | 9.4 | 0 |
| Nalidixic acid | 0 | 0 | 0 | 0 | 0 | 0 | 4.5 | 0 | 1.6 | 15.2 | 0 | 4.4 | 0 | 5.7 | 4.5 |
| Streptomycin | 23.7 | 35.7 | 33.3 | 51.7 | 31.6 | 48.0 | 31.8 | 58.8 | 39.1 | 44.6 | 21.1 | 32.4 | 21.9 | 32.1 | 27.3 |
| Sulfisoxazole | 31.6 | 50 | 31.6 | 48.3 | 29.8 | 44.0 | 34.1 | 58.8 | 40.6 | 38.0 | 21.1 | 30.9 | 6.3 | 30.2 | 31.8 |
| Tetracycline | 36.8 | 57.1 | 31.6 | 44.8 | 33.3 | 48.0 | 31.8 | 52.9 | 45.3 | 45.7 | 26.3 | 38.2 | 25.0 | 30.2 | 22.7 |
| Trimethoprim/sulfamethoxazole | 0 | 0 | 5.3 | 3.4 | 10.5 | 4.0 | 2.3 | 11.8 | 1.6 | 16.3 | 5.3 | 7.4 | 3.1 | 0 | 0 |
a
The data were obtained from the animal arm of NARMS report (http://www.ars.usda.gov/Main/docs.htm?docid=18034). All isolates were obtained from the National Veterinary Services Laboratories.
b
The resistant breakpoints were adopted from early CLSI guidelines as descripted in the NARMS 1997 to 2004 reports. All isolates were susceptible to amikacin, ceftriaxone, and ciprofloxacin (resistant breakpoints of 64 ug/ml and 4 ug/ml were used for ceftriaxone and ciprofloxacin, respectively).
c
No cat isolates were tested in 2001.