THE ENVIRONMENT REPORT
What is chronic wasting disease?
Wildlife officials in the Midwest are battling the appearance of a deadly illness found in elk and deer. Called chronic wasting disease, or CSD, this ailment attacks an animal's brain, slowly eating away healthy tissue. Several captive elk herds in the western U.S. and Canada have been infected with chronic wasting disease. Those heard have now been quarantined, but not before other animals from those herds were sold to farmers in 21 state nationwide.

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