International spread of multidrug-resistant Salmonella Schwarzengrund in food products

We compared 581 Salmonella enterica serotype Schwarzengrund isolates from persons, food, and food animals in Denmark, Thailand, and the United States by antimicrobial drug susceptibility and pulsed-field gel electrophoresis (PFGE) typing. Resistance, including resistance to nalidixic acid, was frequ...

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Bibliographic Details
Published in:Emerging infectious diseases 2007-05, Vol.13 (5), p.726-731
Main Authors: Aarestrup, Frank M, Hendriksen, Rene S, Lockett, Jana, Gay, Katie, Teates, Kathryn, McDermott, Patrick F, White, David G, Hasman, Henrik, Sørensen, Gitte, Bangtrakulnonth, Aroon, Pornreongwong, Srirat, Pulsrikarn, Chaiwat, Angulo, Frederick J, Gerner-Smidt, Peter
Format: Article
Language:English
Subjects:
Animals
antimicrobial drug resistance
Chickens
Commerce
Denmark
Denmark - epidemiology
Drug resistance in microorganisms
Drug Resistance, Multiple, Bacterial
Electrophoresis, Gel, Pulsed-Field
Food Microbiology
Health aspects
Humans
Meat Products
Microbial contamination
Molecular Epidemiology
Nalidixic acid
pulsed-field gel electrophoresis
Salmonella
Salmonella enterica
Salmonella enterica - classification
Salmonella enterica - drug effects
Salmonella enterica - pathogenicity
Salmonella enterica serovar Schwarzengrund
Salmonella Food Poisoning - drug therapy
Salmonella Food Poisoning - epidemiology
Salmonella Food Poisoning - transmission
Serotyping
Sus scrofa
Thailand
Thailand - epidemiology
Turkeys
United States
United States - epidemiology
World health
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Summary:We compared 581 Salmonella enterica serotype Schwarzengrund isolates from persons, food, and food animals in Denmark, Thailand, and the United States by antimicrobial drug susceptibility and pulsed-field gel electrophoresis (PFGE) typing. Resistance, including resistance to nalidixic acid, was frequent among isolates from persons and chickens in Thailand, persons in the United States, and food imported from Thailand to Denmark and the United States. A total of 183 PFGE patterns were observed, and 136 (23.4%) isolates had the 3 most common patterns. Seven of 14 isolates from persons in Denmark had patterns found in persons and chicken meat in Thailand; 22 of 390 human isolates from the United States had patterns found in Denmark and Thailand. This study suggests spread of multidrug-resistant S. Schwarzengrund from chickens to persons in Thailand, and from imported Thai food products to persons in Denmark and the United States.
ISSN:1080-6040
1080-6059
DOI:10.3201/eid1305.061489