In some places, infection rates among local deer populations are staggering. In southern Saskatchewan, for example, nearly 80% of male mule deer now carry CWD. The first problem is that prions are ...

“Prevalence is more pronounced for mule deer in the northern hunting districts that border Canada.” CWD likely first reached northern Montana from deer populations in Saskatchewan and ...

mostly along the Saskatchewan border. Today, some of those areas are seeing 50 to 85 percent of mule deer infected, and it has spread: the first case of CWD in Manitoba was found in a mule deer in ...

Chronic wasting disease expanded into two new North Dakota hunting units last year, though the fatal deer disease still remains documented only in the western half of the state.