# Legionellosis outbreak in Savoie, France

> Live situation record from CLSTR: https://clstr.news/situations/legionellosis-outbreak-in-savoie-france
> Updated: 2026-08-18T06:14:31.000Z. Sources: 18. Developments: 2.

A legionellosis outbreak in Savoie, France, has seen a rise in reported cases and fatalities. Between June 1 and August 14, the Agence régionale de santé (ARS) Auvergne-Rhône-Alpes recorded 46 cases, with 44 patients requiring hospitalization.

The victims, aged between 26 and 91, primarily suffered from respiratory issues. Three fatalities have been confirmed, all involving individuals over the age of 80. The ARS noted that two of these deaths were linked to contamination from a private water network.

Investigations remain concentrated in the Chambéry basin. Authorities are conducting epidemiological and environmental studies to identify the exact source of the contamination, examining sites such as collective building water networks, cooling towers, supermarkets, and restaurants. Legionellosis is a non-contagious lung infection spread through the inhalation of contaminated water micro-droplets.

## Timeline

### 2026-08-18: Savoie legionellosis outbreak causes three deaths and 46 cases

A legionellosis outbreak in Savoie, France, has resulted in 46 cases and three deaths since June. Authorities are investigating potential water contamination sources near Chambéry.

13 sources. https://clstr.news/cluster/savoie-legionellosis-outbreak-causes-three-deaths

### 2026-08-12: Savoie legionellosis outbreak causes two deaths and 41 cases

A legionellosis outbreak in Savoie, France, has resulted in 41 cases and two deaths. Authorities are investigating potential contamination sources in the Chambéry area.

8 sources. https://clstr.news/cluster/savoie-legionellosis-outbreak-causes-two-deaths-and-40-hospitalizations

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Cite as: Legionellosis outbreak in Savoie, France. CLSTR, https://clstr.news/situations/legionellosis-outbreak-in-savoie-france