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Federal Office for Food Safety and Veterinary Affairs
Bern, 30.08.2024 – On August 29, 2024, the Federal Office for Food Safety and Veterinary Affairs (BLV) reported a case of Bluetongue disease of serotype 8 (BTV 8) in the canton of Vaud. Today, the veterinary authorities confirmed Bluetongue disease in two sheep on a farm in the canton of Jura and in one sheep in the canton of Solothurn. This is the first confirmed infection with serotype 3 (BTV-3) in Switzerland. The BLV is preparing the necessary measures in collaboration with the cantonal veterinarians. Currently, there is no approved vaccine against BTV-3 in Switzerland. There is no risk of infection for humans.
Bluetongue disease is transmitted by gnats (small midges). Infection with the Bluetongue virus of subtype 3 (serotype 3, also BTV-3) causes severe symptoms, particularly in sheep. These include fever, inflammation of the mucous membranes, edema, and lameness. Mortality can be very high. In cattle, the disease often has a milder course, but they can also display severe symptoms and decreased milk production. Bluetongue disease is a notifiable and thus reportable animal disease. If animal keepers notice suspicious symptoms, they must immediately contact a veterinarian. The pathogen is not dangerous to humans. Meat and dairy products can be consumed without concern.
The infection with the Bluetongue virus of serotype 3 was detected on August 29, 2024, in two sheep in the canton of Jura and in one sheep in the canton of Solothurn. BTV-3 has been spreading in Europe since 2023 and has now reached Switzerland from the north. Animal transport in Switzerland remains unrestricted. Bluetongue disease was first recorded in Switzerland in 2007. At that time, however, the variant serotype 8 (BTV-8) was circulating. Between 2008 and 2010, Switzerland carried out a comprehensive vaccination program.
Currently, there are three vaccines against BTV-3. However, none of them are approved in Switzerland or the EU. Unlike Switzerland, the EU has a legal basis that allows member states, under certain circumstances, to approve the use of an unapproved vaccine. In Switzerland, vaccine manufacturers can apply for approval, which would be prioritized and expedited by Swissmedic. The vaccines can reduce clinical symptoms, but they do not prevent infection and the spread of the virus.
Measures to protect livestock populations
It is hardly possible to completely protect animals from mosquitoes. However, mosquito nets and physical barriers can reduce the likelihood of mosquitoes biting the animals and spreading the virus. The use of insecticides and repellents can also help reduce the number of mosquitoes in the stable and in the animals’ surroundings. In addition, it is recommended to remove standing water, as this is an ideal breeding ground for mosquitoes.
Contact address for inquiries
Federal Office for Food Safety and Veterinary Affairs BLV
Media Office
Tel. 058 463 78 98
[email protected]
Publisher
Federal Office for Food Safety and Veterinary Affairs