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Abstract

In July–October 2025, two concurrent outbreaks (clones ST49#3 and ST52#4) with 112 notified cases were detected through Denmark’s whole genome sequencing surveillance programme. The outbreaks were clinically severe: 45 (40%) infected individuals were hospitalised and 16 (14%) had bacteraemia. We estimated 900 laboratory-confirmed outbreak cases. Both outbreaks originated from Danish-produced chicken meat. These outbreaks reveal the vulnerabilities in the current prevention and control framework given by the regulatory tolerance for in fresh poultry meat.

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/content/10.2807/1560-7917.ES.2025.30.47.2500856
2025-11-27
2026-02-10
/content/10.2807/1560-7917.ES.2025.30.47.2500856
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Increased severity of two concurrent Campylobacter jejuni clones causing large outbreaks, Denmark, July to October 2025
<p class="citation"> <span>Citation style for this article:</span> <span class="meta-value authors"> <a href="/search?value1=Guido+Benedetti&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Benedetti Guido</a>, <a href="/search?value1=Gitte+S%C3%B8rensen&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Sørensen Gitte</a>, <a href="/search?value1=Ana+Paula+Finatto+Canabarro&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Canabarro Ana Paula Finatto</a>, <a href="/search?value1=Emily+Dibba+White&option1=author&noRedirect=true" class="nonDisambigAuthorLink">White Emily Dibba</a>, <a href="/search?value1=Tine+Graakj%C3%A6r+Larsen&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Larsen Tine Graakjær</a>, <a href="/search?value1=Susanne+Schj%C3%B8rring&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Schjørring Susanne</a>, <a href="/search?value1=Eva+M%C3%B8ller+Nielsen&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Nielsen Eva Møller</a>, <a href="/search?value1=Luise+M%C3%BCller&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Müller Luise</a>, <a href="/search?value1=Steen+Ethelberg&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Ethelberg Steen</a>, <a href="/search?value1=Katrine+Grimstrup+Joensen&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Joensen Katrine Grimstrup</a></span>. Increased severity of two concurrent Campylobacter jejuni clones causing large outbreaks, Denmark, July to October 2025. <a href="/content/ecdc">Euro Surveill.</a> 2025;30(47):pii=2500856. <a href="https://doi.org/10.2807/1560-7917.ES.2025.30.47.2500856" title="doi link" target="_blank">https://doi.org/10.2807/1560-7917.ES.2025.30.47.2500856</a> <span class="ES_Article_citation"> <span class="generated">Received</span>: 13 Nov 2025;&nbsp;&nbsp; <span class="generated">Accepted</span>: 27 Nov 2025 </span> </p>
/content/10.2807/1560-7917.ES.2025.30.47.2500856
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