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Abstract

In September 2025, 50 laboratory-confirmed cases of Legionnaires’ disease (LD) were identified in Albertville, in south-eastern France. Initially, 23 patients were only clinically diagnosed and only confirmed later due to limited sensitivity of the urinary antigen screening test used. All cases occurred within 12 days, suggesting a common point source of massive contamination. Despite investigations and the rapid response of LD surveillance partners, the outbreak source has not yet been identified. Vigilance is maintained to detect possible new cases.

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/content/10.2807/1560-7917.ES.2025.30.45.2500813
2025-11-13
2025-12-14
/content/10.2807/1560-7917.ES.2025.30.45.2500813
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Preliminary report: The most considerable outbreak of Legionnaires' disease in France in the last two decades, Albertville, September 2025
<p class="citation"> <span>Citation style for this article:</span> <span class="meta-value authors"> <a href="/search?value1=Emmanuelle+Vaissi%C3%A8re&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Vaissière Emmanuelle</a>, <a href="/search?value1=Audrey+Merlet&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Merlet Audrey</a>, <a href="/search?value1=Muriel+Deher&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Deher Muriel</a>, <a href="/search?value1=Matthieu+Curtil-Dit-Galin&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Curtil-Dit-Galin Matthieu</a>, <a href="/search?value1=Jean-Marc+Yvon&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Yvon Jean-Marc</a>, <a href="/search?value1=Albane+Beaupoil&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Beaupoil Albane</a>, <a href="/search?value1=Emmanuel+Forestier&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Forestier Emmanuel</a>, <a href="/search?value1=Jean-Marie+Kuntzelmann&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Kuntzelmann Jean-Marie</a>, <a href="/search?value1=Brune+Joannard&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Joannard Brune</a>, <a href="/search?value1=Aymeric+Provost&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Provost Aymeric</a>, <a href="/search?value1=Guillaume+Spaccaferri&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Spaccaferri Guillaume</a>, <a href="/search?value1=Christelle+Nolibos&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Nolibos Christelle</a>, <a href="/search?value1=Laetitia+Beraud&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Beraud Laetitia</a>, <a href="/search?value1=Nathalie+Grangeret&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Grangeret Nathalie</a>, <a href="/search?value1=Christine+Campese&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Campese Christine</a>, <a href="/search?value1=Sophie+Jarraud&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Jarraud Sophie</a>, <a href="/search?value1=the+Albertville+LD+Outbreak+Team+Investigation&option1=author&noRedirect=true" class="nonDisambigAuthorLink">the Albertville LD Outbreak Team Investigation</a></span>. Preliminary report: The most considerable outbreak of Legionnaires&apos; disease in France in the last two decades, Albertville, September 2025. <a href="/content/ecdc">Euro Surveill.</a> 2025;30(45):pii=2500813. <a href="https://doi.org/10.2807/1560-7917.ES.2025.30.45.2500813" title="doi link" target="_blank">https://doi.org/10.2807/1560-7917.ES.2025.30.45.2500813</a> <span class="ES_Article_citation"> <span class="generated">Received</span>: 22 Oct 2025;&nbsp;&nbsp; <span class="generated">Accepted</span>: 13 Nov 2025 </span> </p>
/content/10.2807/1560-7917.ES.2025.30.45.2500813
/content/10.2807/1560-7917.ES.2025.30.45.2500813
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