Now we are calling Chronic Wasting Disease in deer - Zombie Deer. This is, in part, not just because of the way the deer look, a vacant stare and exposed ribs, but because of their aggressive behavior.

In an update from U.S. Centers for Disease Control and Prevention (CDC), chronic wasting disease, now called “zombie deer disease” by some, has spread to 24 American state and two Canadian provinces.

States to have reported the disease include New York, Illinois, Michigan, Virginia, Wisconsin, Iowa, Missouri, Arkansas, Tennessee, Mississippi, Montana, North Dakota, South Dakota, Minnesota, Iowa, Texas, New Mexico, Colorado, Wyoming, Utah, Kansas, Nebraska, Pennsylvania, Maryland, and West Virginia.

Nearly every county in Wyoming has reported this disease.

CWD attacks the brain, spinal cord, and tissues in elk, deer, and moose.

There is no evidence that the disease can affect humans.