About Carotid Artery Worm

Carotid Artery Worm is caused by a parasitic nematode (Elaeophora schneideri) found in white-tailed deer, mule deer, elk and moose.
Commonly Affected Species:
Signs Of Disease
Carotid artery worms are native parasites of mule deer, but have been found in white-tailed deer, mule deer, elk and moose. Most animals show no signs of sickness. However, some animals can exhibit signs including malformed antlers, blindness, muzzle or ear necrosis (destruction), and oral impactions which are caused by the worms restricting blood flow through arteries.
Where is Disease Found?
Carotid artery worms are widely distributed in the western United States, several southeastern states, and areas of Canada. The parasite has been documented in many parts of Idaho in mule deer, moose and elk..
How Can I Protect Myself?
Humans are not known to be affected by carotid artery worms.
Samples to Collect
If there is concern about this condition, contact a conservation officer or an Idaho Department of Fish and Game Regional Office. Appropriate samples can be collected for testing if deemed necessary.
Can I Eat The Meat?
Meat from animals infected with carotid artery worm can be consumed by humans.
What is IDFG doing to help manage this disease?:

IDFG is conducting surveillance for carotid artery worms in moose in Idaho and contributing samples for the development of a diagnostic test in live animals.