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It is still unclear how infected infected deer occurred in Norway. It was previously thought that this came from North America, but new research results refute this theory.
Recent research results indicate that the CWD disease that affected deer in Norway is not related to the North American type, as previously thought. Thus, the way the disease has arrived in Norway remains a mystery.
I can not explain
The rat study shows that these are different types of MDC, the chronic debilitating disease, in Norway and North America.
"With this new knowledge, the rumors that the infection in Nordfjella would originate in North America have little basis.We can not say today how we arrived in Norway," said in a press release the MDC coordinator, Jörn Våge, from the Norwegian Veterinary Institute.
No cases in Sweden
In particular, the infection required the use of several Nordfjella cleaners to prevent infection.
So far, no cases have been found in Sweden, but at present, surveys of the disease are being conducted in Sweden, Finland, Poland and the Baltic countries, in the framework of an EU project. The mapping aims to get a better picture of the affected countries.
FACTS: chronic debilitating disease
Chronic debilitating disease, MDC, is also known as degenerative disease and affects deer animals (pure animals, elk and other species). The disease can infect by direct contact between animals, but also indirectly by infected animals secreting the infectious agent in saliva, urine and faeces, which then contaminate animal feed, water and the soil. One or more symptoms may occur. The most common thing is that the animal is gradually leaning. Behavioral disorders, fatigue, movement coordination problems, paralysis, tremors, increased salivation, increased thirst, and urine excretion may also occur. The disease progresses for weeks or even months before the animal dies. Infected animals do not recover.
Source: SVA
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