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Genetic polymorphism and antimicrobial resistance of salmonella enterica serovar enteritidis isolates from food chain sources
National Diagnostic Research Veterinary Institute, Bulgaria.
National Veterinary Institute, Sweden; DTU Technical University of Denmark, Denmark.
DTU Technical University of Denmark, Denmark; Statens Serum Institut Section for Foodborne, Denmark.
Statens Serum Institut Section for Foodborne, Denmark.
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2021 (English)In: Comptes Rendus de l'Academie Bulgare des Sciences / Proceedings of the Bulgarian Academy of Sciences, ISSN 1310-1331, E-ISSN 2367-5535, Vol. 74, no 7, p. 977-986Article in journal (Refereed) Published
Abstract [en]

Salmonellosis is one of the most frequent food-borne infections. It is caused by infected food mainly of animal origin, although human to human transmission and numerous environmental contaminations may also be inflicted. Salmonella enterica serovar Enteritidis (S. Enteritidis) is a common pathogen worldwide. In this study 49 S. Enteritidis isolates from veterinary and food sources in Bulgaria obtained during the years 2004 to 2012 were analysed. The multiple-locus variable-number of tandem repeats analysis (MLVA) genotyping and the antimicrobial resistance (AMR) to compare the isolates were used. Results showed that isolates were divided into twenty-four MLVA and nine AMR profiles. The calculated Simpson's diversity index was 0.956 for MLVA and 0.693 to be changed for AMR, respectively. The most frequent MLVA profiles presented according to the order of the loci sequenced SENTR7 - SENTR5 - SENTR6 - SENTR4 - SE-3 were: 3-11-5-3-3 (n = 6); 2-8-9-5-3 (n = 5); 2-11-13-5-3 (n = 5); 2-11-12-6-3 (n = 4); 2-11-10-5-3 (n = 3); 3- 9-5-4-3 (n = 3). The AMR revealed that 53.1% of the isolates were resistant to one and 4.1% to ≥ 4 antimicrobials. The MLVA profiles obtained in this study were compared to the published data and they have not been isolated on a frequent basis. A partial match was found for isolates in Belgium, Thailand, China, and USA only.

Place, publisher, year, edition, pages
Academic Publishing House , 2021. Vol. 74, no 7, p. 977-986
Keywords [en]
Antimicrobial resistance, MLVA, S. Enteritidis
National Category
Infectious Medicine
Identifiers
URN: urn:nbn:se:ri:diva-55673DOI: 10.7546/CRABS.2021.07.04Scopus ID: 2-s2.0-85111122250OAI: oai:DiVA.org:ri-55673DiVA, id: diva2:1583719
Note

 Funding details: Ministry of Education, Youth and Science, MEYS, BG051PO001-3.3.05-0001; Funding text 1: #Corresponding author. The first author was supported by the Bulgarian Ministry of Education, Youth and Science grant BG051PO001-3.3.05-0001. 

Available from: 2021-08-09 Created: 2021-08-09 Last updated: 2021-08-09Bibliographically approved

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Löfström, Charlotta

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