DNCB Outbreak Expands in Isère Amid Growing Concerns
The DNCB outbreak in Isère is growing, prompting surveillance measures in new communes.
Key Points
- • 26 confirmed DNCB cases in Savoie.
- • Three communes in Isère now under surveillance.
- • DNCB is transmitted by insect bites and affects only cattle.
- • 117 communes in Isère are currently monitored.
As of July 17, 2025, the outbreak of Dermatose Nodulaire Contagieuse Bovine (DNCB) is intensifying in the Isère region, necessitating immediate action as new cases emerge. Currently, there are 26 confirmed cases across the Savoie region, with 17 in Savoie and 9 in Haute-Savoie, prompting alerts from health officials in Isère, where three additional communes—Goncelin, Theys, and Haut-Breda—have now been placed under surveillance due to this vector-borne disease.
DNCB affects only bovines, zebu, and buffalo, and is primarily transmitted through insect bites, particularly from flies and horseflies. Though the disease does not affect humans, it poses significant risks to cattle health and can lead to considerable economic losses for farmers. As a Category A disease, DNCB mandates rapid eradication actions, including culling infected livestock and implementing stringent biosafety measures. In response to this outbreak, a regulated zone has been established, affecting Isère and other regions within a 50 km radius of the outbreak locations.
Currently, 117 communes in Isère are under surveillance, subject to specific movement and safety restrictions regarding cattle. Local authorities are actively organizing informational meetings to educate farmers about DNCB, and they urge any reports of suspected cases to be directed to veterinary services immediately to contain the outbreak effectively.