Skip to Main content Skip to Navigation
Journal articles

Multinational outbreak of travel-related Salmonella Chester infections in Europe, summers 2014 and 2015

Abstract : Between 2014 and 2015, the European Centre for Disease Prevention and Control was informed of an increase in numbers of Salmonella enterica serotype Chester cases with travel to Morocco occurring in six European countries. Epidemiological and microbiological investigations were conducted. In addition to gathering information on the characteristics of cases from the different countries in 2014, the epidemiological investigation comprised a matched case-case study involving French patients with salmonellosis who travelled to Morocco that year. A univariate conditional logistic regression was performed to quantify associations. The microbiological study included a whole genome sequencing (WGS) analysis of clinical and non-human isolates of S. Chester of varied place and year of isolation. A total of 162 cases, mostly from France, followed by Belgium, the Netherlands, Spain, Denmark and Sweden were reported, including 86 (53%) women. The median age per country ranged from 3 to 38 years. Cases of S. Chester were more likely to have eaten in a restaurant and visited the coast of Morocco. The results of WGS showed five multilocus sequence types (ST), with 96 of 153 isolates analysed clustering into a tight group that corresponded to a novel ST, ST1954. Of these 96 isolates, 46 (48%) were derived from food or patients returning from Morocco and carried two types of plasmids containing either qnrS1 or qnrB19 genes. This European-wide outbreak associated with travel to Morocco was likely a multi-source outbreak with several food vehicles contaminated by multidrug-resistant S. Chester strains.
Document type :
Journal articles
Complete list of metadatas

Cited literature [31 references]  Display  Hide  Download

https://hal-pasteur.archives-ouvertes.fr/pasteur-01532210
Contributor : Marie Lemesle <>
Submitted on : Friday, June 2, 2017 - 3:38:56 PM
Last modification on : Friday, October 23, 2020 - 5:34:02 PM

File

Multinational outbreak.pdf
Publication funded by an institution

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Collections

Citation

L Fonteneau, N Jourdan da Silva, Laétitia Fabre, P Ashton, M Torpdahl, et al.. Multinational outbreak of travel-related Salmonella Chester infections in Europe, summers 2014 and 2015. Eurosurveillance, European Centre for Disease Prevention and Control, 2017, 22 (7), ⟨10.2807/1560-7917.ES.2017.22.7.30463⟩. ⟨pasteur-01532210⟩

Share

Metrics

Record views

438

Files downloads

610