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Bird disease Newcastle disease was discovered on a farm with approximately 5,000 laying hens in the municipality of Mölndal, Västra Götaland County. It shows test results from the National Veterinary Office (VAS). The Swedish Agriculture Agency has introduced restrictions in the region to prevent the spread of the infection. Newcastle disease is a serious and contagious disease that affects birds. The disease is not dangerous for humans.
– The avian influenza virus and the virus causing Newcastle disease circulate regularly in wild birds. Therefore, in order to avoid contagious contamination of domestic birds, it is always important to avoid any direct and indirect contact between domestic birds and wild birds, "said Karin Åhl, anti-corrosist to the Swedish Directorate of agriculture.
On the infected farm, there is a ban on entry and special restrictions, which means that no animal or animal product can go out or enter the farm. The animals will be killed and the farm will be cleaned. The Swedish Board of Agriculture has opened a contagion investigation to determine where the infection could have occurred and whether there is a risk that the infection has spread.
Protection and surveillance zone around the infected farm
The Swedish Board of Agriculture decided to introduce a three-mile radius around the farm and a surveillance zone of a radius of 10 miles. In the field of protection, the following restrictions apply:
- Poultry and other captive birds must be kept indoors.
- It is forbidden for unauthorized persons to enter animal shelters with poultry and other birds.
- It is prohibited to transport live birds (including caged birds), hatching eggs and by-products.
- It is forbidden to organize exhibitions and other gatherings with live birds.
The surveillance sector also includes transportation bans and exhibitions. Some poultry transports may be carried out with the permission of the Swedish Office of Agriculture.
Animal owners who suspect Newcastle disease should contact the veterinarian
Newcastle disease is a reportable disease under the Animal Disease Act. Always consult a veterinarian if your animals show signs of illness. All those raising poultry and other birds are urged to be more vigilant for signs of disease.
Symptoms of Newcastle disease on Newcastle disease
The symptoms can vary a lot. The signs of the disease can be:
- greatly reduced egg production
- mustard-free eggs (known as hides or eggs)
- eggshell with pigment changes.
- reduced general license
- increased mortality
- suspended wings, paralyzed legs, torsion of the neck, cramps, circulatory system (symptoms of the central nervous system)
- breathing difficulties with or without cough
- diarrhea
How is the virus spread?
The infection is transmitted mainly through direct contact between birds. The infection is also transmitted by tools, shoes, clothes, vehicles, dust and feathers. The viruses that cause Newcastle disease in poultry can also circulate among wild birds. Some types of viruses are associated with epidemics of duck fever resulting in significantly increased mortality in wild pigeons. During the autumn, cases of pest fever were observed in Varberg and other cases of increased mortality in pigeons in which we can suspect the plague were reported to SVA in different parts of Halland and Västra Götaland.
– Our analyzes show that the virus at the origin of Newcastle disease in a crew of laying hens in Mölndal is linked to viruses generally associated with the eruption of duck parasites in wild pigeons. This suggests that the infection has spread to laying hens through direct or indirect contact with pigeons, "said Karl Ståhl, assistant psychologist at the State Veterinary Office.
More information
About Newcastle disease
Information for pet owners on how to protect their birds from infection (AVS)
Decision on the creation of a protection and surveillance zone
Map of the area with protection and surveillance zone
Contact persons for journalists
Department of Agriculture
Karin Åhl, infectious agent
The unit poultry and game
[email protected]
Telephone: 036-15 51 58
Veterinary Office of State
Karl Ståhl
Assistant State Psychologist
Veterinary Office of State
[email protected]
Telephone 018-67 41 27
Administrative Council of Västra Götaland County
Ulf Lövdahl
Länsveterinär
Phone 010 224 52 83
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