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Journal of Clinical Microbiology, February 2008, p. 522-526, Vol. 46, No. 2
0095-1137/08/$08.00+0     doi:10.1128/JCM.00709-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.

Prevalence and Characterization of Multidrug-Resistant (Type ACSSuT) Salmonella enterica Serovar Typhimurium Strains in Isolates from Four Gosling Farms and a Hatchery Farm{triangledown}

Chang-You Yu,1 Shih-Jen Chou,1 Chia-Ming Yeh,2 Maw-Rong Chao,1 Kwo-Ching Huang,3 Yung-Fu Chang,4 Chien-Shun Chiou,5 Francois-Xavier Weill,6 Cheng-Hsun Chiu,7,8 Chi-Hong Chu,9 and Chishih Chu2*

Department of Veterinary Medicine,1 Department of Microbiology and Immunology, National Chiayi University, Chiayi, Taiwan,2 Bureau of Animal and Plant Inspection and Quarantine, Council of Agriculture, Executive Yuan, Taipei, Taiwan,3 Department of Population Medicine and Diagnostic Science, College of Veterinary Medicine, Cornell University, Ithaca, New York 14853,4 Central Branch Office, Center for Disease Control, Taichung, Taiwan,5 Centre National de Référence des Salmonella, Institut Pasteur, Paris, France,6 Department of Pediatrics, Chang Gung Children's Hospital, Taoyuan, Taiwan,7 Chang Gung University College of Medicine, Taoyuan, Taiwan,8 Department of Surgery, National Defense Medical Center, Taipei, Taiwan9

Received 1 April 2007/ Returned for modification 23 May 2007/ Accepted 23 November 2007

Salmonella enterica serovar Typhimurium strains of phage types DT104 and U302 are often resistant to ampicillin, chloramphenicol, streptomycin, sulfonamides, and tetracycline (the ACSSuT resistance type) and are major zoonotic pathogens. Increased consumption of goose meat may enhance the risk of transferring S. enterica serovar Typhimurium and other enteric pathogens from geese to human due to the consumption of meats from infected geese or improper preparation of meats. Therefore, we characterized S. enterica serovar Typhimurium strains isolated from four goose farms (farms A, B, C, and D) and one hatchery farm (farm E) to determine the epidemic and genetic differences among them. Antibiotic susceptibility tests and multiplex PCR confirmed that 77.6% (52/67) of strains were ACSSuT strains isolated from farms A, C, and E. Antibiotic-susceptible strains were isolated mostly from farm B, and no strain was observed in farm D. All ACSSuT strains harbored a 94.7-kb virulence plasmid and contained one 1.1-kb conserved segment identical to that of Salmonella genomic island 1. Four genotypes were determined among these S. enterica serovar Typhimurium isolates by pulsed-field gel electrophoresis analysis of XbaI-digested DNA fragments. Most isolates (85.29%; 29/34) of major genotype Ib were ACSSuT strains isolated mainly from goslings of farm C and egg membranes of farm E, a hatchery farm, suggesting that S. enterica serovar Typhimurium strains in isolates from goslings might originate from its hatchery, from the egg membranes to the gosling fluff after hatching. Multiple phage types, types 8, 12, U283, DT104, and U302, were identified. In conclusion, geese were a reservoir of diverse multidrug-resistant (type ACSSuT) S. enterica serovar Typhimurium strains, and each farm was colonized with genetically closely related S. enterica serovar Typhimurium strains.

* Corresponding author. Mailing address: Department of Microbiology and Immunology, National Chiayi University, 300 University Road, Chiayi 60004, Taiwan. Phone: 886 5 2717898. Fax: 886 5 2717831. E-mail: cschu{at}mail.ncyu.edu.tw

{triangledown} Published ahead of print on 12 December 2007.

Journal of Clinical Microbiology, February 2008, p. 522-526, Vol. 46, No. 2
0095-1137/08/$08.00+0     doi:10.1128/JCM.00709-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Yu, C.-Y., Chu, C., Chou, S.-J., Chao, M.-R., Yeh, C.-M., Lo, D.-Y., Su, Y.-C., Horng, Y.-M., Weng, B.-C., Tsay, J.-G., Huang, K.-C. (2008). Comparison of the Association of Age with the Infection of Salmonella and Salmonella enterica Serovar Typhimurium in Pekin Ducks and Roman Geese. Poult. Sci. 87: 1544-1549 [Abstract] [Full Text]  


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