Surveillance of ruminant diseases in the Nordic countries.
All the Nordic countries have a basis for their surveillance and disease control in ruminants in national legislation and regulations listing notifiable diseases of concern to the countries. The Nordic countries are a disease-free zone comparing to other parts of the world and the aim of the surveillance is to keep that status and be able to document it. Following is a short summary from each country.
Valsson
O
O
National Veterinary Institute, P.O. Box 7073, SE-75007 Uppsala, Sweden.
Alenius
S
S
Nielsen
T K
TK
Nyberg
O
O
Salmela
P
P
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology*; D004812:Epidemiologic Methods / Q000662:veterinary; D012537:Scandinavian and Nordic Countries / Q000453:epidemiology