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Norway plans to exterminate a large reindeer herd to stop a fatal infectious brain disease

Noted: Based on the prevalence in Nordfjella—estimated at 1%—Lund guesses that CWD may have been present for only 5 to 7 years, which could mean contamination is minimal. “There’s a good chance they can solve the problem,” says wildlife ecologist Michael Samuel of the University of Wisconsin in Madison. Quick response has been shown to work before: In 2005, routine testing revealed CWD on two deer farms in western New York. Strict regulations prevented the disease from spreading. The state has seen no cases since.