|Headrick, Marcia - FDA-CVM|
|Dargatz, Dave - USDA-APHIS-VS-CEAH|
|Ferris, Kathleen - USDA-APHIS-NVSL|
Submitted to: Poultry Science Association Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: July 14, 2002
Publication Date: August 14, 2002
Citation: CRAY, P.J., HEADRICK, M., DARGATZ, D., FERRIS, K. NARMS 1997-2001: SALMONELLA TYPHIMURIUM DT104 AMONG POULTRY ISOLATES. POULTRY SCIENCE ASSOCIATION MEETING ABSTRACT. 2002. Abstract#438. p. 102-103. Technical Abstract: Salmonella Typhimurium DT104 is commonly resistant to five (Ampicillin, Chloramphenicol, Streptomycin, Sulfamethoxazole and Tetracycline [ACSSuT]) or more antimicrobials. It has been recovered from food producing animals, domestic pets, and wild birds and animals. Long-term carriage is noted, especially in cattle and cats. An increase in morbidity is often observed following infection and resistance to multiple antimicrobials can complicate treatment options. The animal arm of the National Antimicrobial Resistance Monitoring System - Enteric Bacteria (NARMS) monitors for developing antimicrobial resistance among Salmonella isolates of animal origin. Salmonella isolates were collected from federally inspected slaughter and processing plants, on-farm studies, and veterinary diagnostic laboratories. Antimicrobial susceptibility testing was conducted using the Sensititre System (Trek Diagnostics) and a custom made antimicrobial panel. Salmonella Typhimurium DT104 was identified among animal isolates originating from nearly all animal sources including cattle, swine, cats, dogs, horses, chickens and turkeys. A majority of DT104 isolates were resistant to a least five (ACSSuT) antimicrobials. However, some isolates exhibited and intermediate susceptibility to Streptomycin resulting in an ACSuT pattern. From 1997 through 2001, the percent of DT104 isolates among the total number of Salmonella isolates tested was less than 4%. Less than one percent fo the total number of isolates tested each year were identified as DT104 in either non-diagnostic chicken (0.21% [n=5], 0.33% [n=11], 0.22% [n=19], 0.23% [n=18] and 0.31% [n=13] for 1997 through 2001, respectively) or non-diagnostic turkey (0%, 0%, 0.02% [n=2], 0.04% [n=3], and 0.05% [n=1] for 1997 through 2001, respectively) isolates. (NOTE: Data for 2001 is preliminary.). These data indicate that Salmonella Typhimurium DT104 is infrequently isolated from poultry.