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United States Department of Agriculture

Agricultural Research Service

Title: Molecular Subtyping of Salmonella Enteric Serotype Newport Isolates from Animals: Emergence of Multidrug-Resistant Strains, Narms 1997-1999

item Wallace, Frederick
item Petersen, Kenneth - USDA-APHIS
item Dargatz, David - USDA-APHIS
item Angulo, Fred - CDC
item Headrick, Marcia - FDA
item Marano, Nina - CDC
item Rossiter, Shannon - CDC
item Tollefson, Linda - FDA
item Cray, Paula

Submitted to: Emerging Infectious Diseases
Publication Type: Proceedings
Publication Acceptance Date: January 20, 2000
Publication Date: July 16, 2000
Citation: Wallace, F.M., Petersen, K.E., Dargatz, D., Angulo, F., Headrick, M., Marano, N., Rossiter, S., Tollefson, L., Cray, P.J. 2000. Molecular subtyping of salmonella enteric serotype newport isolates from animals: emergence of multidrug-resistant strains, narms 1997-1999. Emerging Infectious Diseases. P. 151-152.

Technical Abstract: In 1999, cluster of human Salmonella enterica serotype Newport infections in several states were reported to CDC. Isolates from ill humans, and one hamburger sample obtained from a grocery store, had the same antimicrobial resistance pattern (resistance to: ampicillin, cephalothin, chloramphenicol, amoxicillin/clavulanic acid, streptomycin, sulfamethoxazole, and tetracycline). These isolates were found to be indistinguishable by PFGE. The USDA also identified S. newport with the same multi-drug resistance pattern from ground beef samples collected at slaughter or processing facilities, from non-clinical dairy cattle feces, and from canine and equine diagnostic isolates. To aid in this investigation, we explored the antimicrobial susceptibility pattern and molecular subtypes of animal S. newport isolates submitted to the National Antimicrobial Resistance Monitoring System (NARMS) for enteric bacteria 1997-1999.

Last Modified: 4/22/2015
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