Multi-country outbreak of Salmonella enteritidis infection linked to the international ice hockey tournament

T. Pärn, V. Dahl, T. Lienemann, International Outbreak Investigation Team, I. Lucenko (Member of the Working Group), J. Storozenko (Member of the Working Group)

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

In April 2015, Finnish public health authorities alerted European Union member states of a possible multi-country Salmonella enteritidis outbreak linked to an international youth ice-hockey tournament in Latvia. The European Centre for Disease Prevention and Control (ECDC), Finnish and Latvian authorities initiated an outbreak investigation to identify the source. The investigation included a description of the outbreak, retrospective cohort study, microbiological investigation and trace-back. We identified 154 suspected and 96 confirmed cases from seven countries. Consuming Bolognese sauce and salad at a specific event arena significantly increased the risk of illness. Isolates from Finnish, Swedish and Norwegian cases had an identical multiple-locus variable-number of tandem repeats analysis-profile (3-10-6-4-1). Breaches in hygiene and food storing practices in the specific arena's kitchen allowing for cross-contamination were identified. Riga Cup participants were recommended to follow good hand hygiene and consume only freshly cooked foods. This investigation demonstrated that the use of ECDC's Epidemic Intelligence Information System for Food- and Waterborne Diseases and Zoonoses platform was essential to progress the investigation by facilitating information exchange between countries. Cross-border data sharing to perform whole genome sequencing gave relevant information regarding the source of the outbreak.

Original languageEnglish
Pages (from-to)2221-2230
Number of pages10
JournalEpidemiology and Infection
Volume145
Issue number11
DOIs
Publication statusPublished - 1 Aug 2017
Externally publishedYes

Keywords*

  • International outbreak investigation
  • MLVA
  • Salmonella enteritidis PT1
  • whole genome sequencing (WGS)

Field of Science*

  • 3.3 Health sciences

Publication Type*

  • 1.1. Scientific article indexed in Web of Science and/or Scopus database

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