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Coronavirus COVID-19

COVID-19 Advisory: WSU Extension is working to keep our communities safe. All Extension programming is being provided virtually, postponed, or canceled. Effective March 16, 2020, WSU Extension county offices and WSU Research & Extension Centers will be closed to the public. We are available via email, phone, and webconference.

Blue Tongue

Program Contact: Nils Johnson, Extension Coordinator
(509) 684-2588 •

Blue Tongue Disease in Deer and Farm Livestock

There are two distinct diseases commonly associated with blue-tongue symptoms, Epizootic Hemorrhagic Disease (EHD) and Blue Tongue Virus (BTV).  While symptoms can be similar between the two diseases, other details are not, including risk of crossover between deer and farm livestock.

Blue Tongue Virus (BTV)

  • Is uncommon in cattle
  • Fatality rates are high for deer
  • Was detected in recent samples taken from dead deer in Stevens County

Epizootic Hemorrhagic Disease (EHD)

  • Fatality rates are high for deer
  • Can transfer to farm livestock
  • Effects on sheep and cattle are mild
  • Was not detected in recent samples taken from deer in Stevens County

More information is available through the links below.

Bluetongue Seminar