Hunters killed 344 deer during the first three days of a special southeast Minnesota whitetail season prompted by the discovery there of two animals that carried chronic wasting disease (CWD).
The hunt, which began Saturday and ends Jan. 15, is being held in a 371-square-mile area surrounding the location near Lanesboro where the infected deer were killed by hunters in November.
Since then, a third hunter-killed deer carrying CWD was detected in the southeast. The diseased animals were among 40,000 deer tested in Minnesota by the Department of Natural Resources since 2002.
The DNR has monitored harvested deer in the southeast in recent years because the state's only previous CWD-positive wild deer also was found there, in 2011 near Pine Island.
The DNR hopes about 900 adult deer are killed in the ongoing hunt and a follow-on landowner hunt, giving researchers a large enough sample to determine whether CWD is widespread in the area or limited to a few animals.
CWD is progressively fatal to deer, elk and moose. The disease is carried in the animals' saliva and other body fluids, and close contact among animals is believed to encourage its transmission. For that reason, the DNR has banned deer feeding in Fillmore, Houston, Mower, Olmsted and Winona counties.
No CWD test exists for live deer.
DNR research manager Lou Cornicelli said Tuesday his agency is unsure how many hunters have been in the field since Saturday. About 2,300 residents and 150 nonresidents have purchased special $2.50 disease management permits, Cornicelli said.