Deadly deer virus detected in Western Washington yak

Chris McGann
Communications

The state animal disease lab confirmed a case of EHD in a
 Whatcom County yak this week.

Last week, a Whatcom County veterinarian  euthanized a six-year-old yak cow showing symptoms of Epizootic Hemorrhagic disease (EHD), a potentially deadly virus that primarily effects wild deer populations, but occasionally crosses over to cattle.

A subsequent Washington Animal Disease Diagnostic Laboratory (WADDL) necropsy confirmed the animal had EHD.

Two other yaks from the herd died in recent weeks after displaying similar clinical signs such as stiff gate, drooling and nasal secretions that are consistent with EHD.

According to the owner's report, the euthanized yak began showing signs of illness on Sept. 30.  It appeared to isolate itself from the herd, developed a thick-mucous runny nose, and had difficulty moving. The owner also observed small droplets of blood coming from possible fly bites near its eyes. They called the vet.

The clinical signs of EHD are similar to the much more devastating foot-and-mouth disease, so it is important to report suspected cases to the State Veterinarian.

EHD is not a threat to human health.

The the owners took the euthanized animal to WADDL in Pullman, where lab reports confirmed the EHD diagnosis.

The outbreak in Western Washington comes on the heels of a confirmed EHD diagnosis in four cows from Franklin and Walla Walla counties.

Biting midges or Culicoides gnats, commonly known as “no-see-ums” are the main way the disease is spread. Female biting midges can ingest blood from infected animals and then feed on uninfected animals. These midges typically breed near mud, so EHD outbreaks often occur when cattle and other ruminants congregate in wet areas.

No vaccines are available for EHD, so controlling the midges by eliminating standing water from areas used by cows, applying insecticides around water areas to decrease the swarms, or using bug repellent on the cows is the best defense.
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For more information visit WSDA’s Animal Services Division webpage.

Deadly deer disease diagnosed in four Eastern Washington cows

Chris McGann
Communications

Controlling midges is the best defense against EHD.

Four cows in Franklin and Walla Walla counties were diagnosed this week with Epizootic Hemorrhagic disease (EHD), a potentially deadly virus that primarily effects wild deer populations but occasionally crosses over to cattle.

Cattle owners should be on the lookout for EHD symptoms such as excessive drooling, lethargy, difficulty walking, or oral and nasal lesions with ulceration, which are similar to the much more devastating foot-and-mouth disease.

Fever and anorexia due to the oral erosions were seen in the recently diagnosed cattle. Supportive care is the only treatment for infected cows.

Differentiating EHD from other animal diseases requires laboratory testing so you should contact your veterinarian if you observe these symptoms.

“Although EHD is seldom prevalent in cattle, we must show an abundance of caution and investigate each case due to the similarity of symptoms this disease has with the highly contagious and economically disastrous foot-and-mouth disease,” said Washington State Veterinarian Dr. Brian Joseph.

EHD is not a threat to human health.

The disease usually occurs in cattle where environmental conditions support large populations of biting midges.

Biting midges or Culicoides gnats, commonly known as “no-see-ums” are the main way the disease is spread. Female biting midges can ingest blood from infected animals and then feed on uninfected animals. These midges typically breed near mud, so EHD outbreaks often occur when cattle congregate in wet areas.

All ruminants can be affected, but generally it is a deer disease.

No vaccines for EHD are available for EHD so controlling the midges by eliminating standing water from areas used by cows, applying insecticides around water areas to decrease the swarms, or using bug repellent on the cows is the best defense.

In the coming weeks, the cool fall weather and frost is expected to limit the gnat population and the spread of the disease.

For more information visit WSDA’s Animal Services Division web page.

Shipping cattle to another state? Quick rule reviews available online

David Hecimovich
Animal Disease Traceability manager

If you’re shipping dairy or beef cattle across state lines and want quick information on interstate travel requirements, there’s a relatively new website you should check out. 

InterstateLivestock.com, sponsored by the U.S. Animal Health Association (USAHA) and the National Institute for Animal Agriculture, has been operating since October. 

The information posted on the website makes it easier for producers, veterinarians and marketers to understand and meet animal health import requirements before moving cattle. Once online, users enter the state they are shipping from and the destination state. The user then will be asked pertinent questions including species, sex, and age of the livestock; certificate of veterinary inspection status, and other necessary details. 

State animal health officials collaborated on creating the site. Each state, including Washington, updates its import requirements on the website when new or amended livestock rules are adopted. 

The website provides instant access to shipping information without having to call a specific state about requirements. Navigating the website is quick and easy to follow. Check out InterstateLivestock.com today.

Inspecting livestock in the 21st Century

By:  Lynn Briscoe
Animal Services Division 

Our Livestock Inspection Program working at the Stockland Livestock Auction in Davenport recently hosted a few guests from Idaho's State Brand Department, Department of Agriculture and even the federal Department of Homeland Security.

WSDA's Kyle Schaffer demonstrates the new
system to Ken Wood of the Idaho Brand Board.

Why did they join us? Like many of our counterparts in neighboring states and nearby Canadian provinces, the representatives from Idaho and the federal government were interested in WSDA's new electronic system for tracking data collected during a livestock inspection.  

All this month, our Livestock Inspection Program has been working on this new system, created thanks to funding provided through the support of the Legislature and our partners in Washington's dairy and cattle industries. The application that was developed allows our brand inspectors to collect the same inspection data they always have, but store it electronically on a

computer tablet, rather than jotting it down on a paper form.

WSDA's Kris Budde enters livestock
data into a computer tablet. 

This makes the information easier to store and easier to retrieve. Modernizing this data collection not only creates efficiencies within the program, but also enhances the department’s animal disease traceability efforts. It updates methods and processes by which livestock movement information is collected, stored, and easily made accessible to animal health officials. That would be critical during an animal disease outbreak.  

The representatives and board members from the Idaho's brand and agriculture departments joined us July 26 and 27 to watch the new system in action and take part in its live implementation during the scheduled sale. 

If you are at a public livestock market and see our staff using a computer tablet, feel free to take a look at the process they are following. It is an historic change for the agency and animal disease traceability in our state.