A COVID-19 message to equestrians

Dr. Brian Joseph
Washington State Veterinarian

State Veterinarians across the U.S are concerned about animal susceptibility to coronavirus and
possible links between animals and the spread of COVID-19 among humans.

Horses are not susceptible to COVID-19, but horse owners
should avoid gathering with people around horse barns etc.

For horse owners and people who work with horses, we see little cause for concern about equine susceptibility or transmission; no evidence currently links the virus that causes COVID-19 with disease in horses nor are there any indications that horses can infect humans with the virus.

A virus in the coronavirus family, equine coronavirus (ECoV), can cause gastrointestinal disease in horses with signs of fever, depression diarrhea and colic, but this variant is NOT the same as the virus that causes COVID-19.

The Equine Disease Communication Center has recently put together valuable resources about the differences in ECoV and COVID-19.

Concern about people

Although our horses are relatively safe for the pandemic, people participating in equine activities and events such as group trail rides, boarding, training and lessons are still at risk.

At a time when we are trying to control the spread of COVID-19, we need Washington’s equine enthusiasts to do their part, too, by adhering to strict limits on, or completely avoiding gatherings of any kind.

Improve your biosecurity for horses

We need to improve our personal biosecurity and that of our horses. So, here are some best practices that were developed with the help of our colleagues in Kentucky to adjust equine activities to protect public health during this time. I urge you to implement these best practices in your facility and in your activities:

• Open barns to allow as much fresh air exchange as is possible.
• Assign equipment to an individual horse. Virus can be carried on equipment (ie: halters, shovels, brushes, cross ties, etc.) 
• Clean and disinfect equipment daily.  This is always a good practice and can decrease the spread of other important equine viruses such as equine influenza virus and equine herpes virus. Clean and disinfect surfaces such as desks, rails, gates, floor mats having contact with individuals or equipment daily.
• Prepare and complete records electronically. Paper records or common dry erase boards can be a pathway for virus to pass between people.
• Limit the number of daily visitors to farms. Consider a schedule that limits the number of individuals on the farm to be less than 10 at any one time.
• Farm employees and horse owners should practice social distancing. This is the only way to stop the spread of the virus.
• Farm employees should take their own temperature twice daily and self-quarantine if they have a fever.  Fevers should be reported to the barn manager.  Designate someone else to care of the sick person’s horse.
• Do not to move your horses between stables unless it is essential. 
• Practice excellent biosecurity. Clean and disinfect your tack and your trailer including the wheels. Moving horses to new stables causes them stress which can suppress their immune system making them more susceptible to disease.
• Follow CDC’s recommendations and wash your hands frequently with soap and water. 

One other note: WSDA's brand program not doing field inspections for horses (lifetimes or annuals) to observe social distancing during this crisis. This work will resume as soon as it is safe.

I understand that some of what we are recommending is inconvenient, some of it costs money, but if we all work together, we can stop the spread of this virus.  All our health, our economy and the quality of our lives depends on our working together.

Keeping African Swine Fever out of the United States

Chris McGann
Communications

Last month, the U.S. Department of Agriculture (USDA) took to the internet with a nationwide call to arms against a looming threat to the U.S. pork industry: African Swine Fever (ASF).

There is no cure for African Swine Fever, preventing it from infecting pigs in
the United States requires vigilance and strong biosecurity measures. 

“African Swine Fever has never been detected in the United States. However it is a very real threat,” said Secretary of Agriculture Sonny Perdue in a video message. He said the disease is "spreading around the world right now and affects both domestic and feral pigs.”

ASF is a devastating, deadly disease that would have a significant impact on U.S. livestock producers, their communities and the economy if it were found here. There is no treatment or vaccine available for this disease. The only way to stop this disease is to depopulate all affected or exposed swine herds.

Not a health threat to humans

Along with the strong warning, Perdue emphasized that humans are not affected by ASF and it is not a threat to our food supply.

“Within the U.S. we are working with many partners including states, veterinarians, and industry organizations to raise awareness of this deadly disease and how it spreads,” Perdue said.

WSDA’s role

WSDA is joining the effort to raise awareness.

Even though our state is not thought of as a big pork producer, Washington is the home of 3,000 breeding sows on approximately 376 farms, according to NASS.

Interim Washington State Veterinarian Dr. Amber Itle said ASF is highly contagious and it’s incumbent on us to be on the lookout for it, practice effective biosecurity measures, and help prevent the disease from infecting  both commercial and feral swine populations.

“ASF is only a plane ride away,” Itle said. “We are asking for everyone’s help in preventing it from getting here to begin with.”

A global threat

The disease has been a persistent and costly problem for pork producers in other countries. Since 2007, active ASF outbreaks have been reported in multiple countries across Africa, Asia and Europe, in both domestic and wild pigs.

The ease and speed of international travel combined with the potential for this disease to cause animal suffering, economic losses, and food supply interruptions makes ASF a serious concern for both farmers and consumers.

In the video released with the announcement, Secretary Perdue said a U.S. outbreak of ASF could cripple the pork industry.

“We want everyone who comes in contact with pigs, from the large farm owners to the owners of a single teacup pig and even international travelers and petting zoo visitors, to understand how easily this disease can spread and the importance of keeping our U.S. pigs free of this disease," Perdue said.
“The U.S. pork industry supports more than half a million jobs, the majority of those in rural areas,” he said. “We know what’s at stake and we are determined to keep African Swine Fever out of the United States.”

How the virus spreads

• Direct contact with feces, urine, discharges, blood, or tissues from infected pigs
• Carrier swine and their relatives, especially wild boars, warthogs, and feral pigs
• Feeding raw, undercooked or smoked pork products to swine
• Contaminated equipment, footwear, clothing, food, vehicles, and facilities
• Fly, lice, and mosquito bites
• Soft ticks of the genus Ornithodoros (a host for the ASF virus)

Signs of ASF

• Sudden death or chronic illness
• Abortion
• High fever
• Weakness
• Depression
• Poor appetite
• Red or blue-tinged skin
• Skin hemorrhages
• Diarrhea or constipation

Treatment and prevention

ASF cannot be treated. Efforts focus on containing the disease to limit the affected outbreak area, euthanizing all pigs on affected farms, and investigating the outbreak to identify the source. Prevention measures include close monitoring of animal health, effective biosecurity measures, animal movement regulation, proper feeding practices, control of wild hogs, and tick-vector control.

If you raise pigs, monitor all animals daily for signs of illness. Call your veterinarian immediately if you see unusual signs of illness such as high fevers, skin discoloration, or sudden death. Report any high mortality or morbidity event to the State Veterinarian’s Office.

Obtain a Certificate of Veterinary Inspection for interstate movement of livestock. Quarantine herd additions for 30 days or keep a closed herd.  If you travel internationally, take extreme biosecurity precautions when you return.

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

Strangles reported in Whidbey Island horses, but an issue for all horse owners

Dr. Amber Itle
Assistant State Veterinarian 

Last week, strangles was diagnosed in a horse and two ponies at a Whidbey Island stable. There are a total of five horses and two ponies on the premise and the infected animals were recently purchased from a sale yard in Oregon.

While there is no formal quarantine for the facility, the owners have committed to isolating the infected horse and ponies, which are all under the supervision of a veterinarian. Additionally, no animals are currently being allowed on or off the premise.

Strangles is rarely fatal and the prognosis for recovery is usually very good with proper care. But as the name suggests, strangles can affect a horse’s respiratory system. Typically, signs of the disease include:

• Fever.
• Abscesses in the mandibular lymph nodes.
• Nasal discharge that can include thick white and yellow mucus.
• Inflammation of the throat.
• Difficulty swallowing.
• Wheezing.
• Coughing.
• In rare cases, bleeding from the capillaries.

While strangles is contagious and endemic in Washington, it is not usually fatal. Still, it is a reportable disease, meaning any diagnoses of strangles should be reported to the Washington State Veterinarian's Office.

The best protection against strangles is practicing good biosecurity. Here are some other suggestions from the Equine Disease Communication Center (EDCC):

• When possible, isolate new horses for up to three weeks when they are being introduced to a new facility. 
• During an outbreak, such as the situation at the Whidbey Island facility, avoid coming in contact with susceptible animals after handling an infected animal. 
• Wear protective clothing, avoid using the same equipment on multiple animals, and disinfect both your hands and equipment when moving between animals.

The EDCC also publishes this “Strangles Fact Sheet,” which has more tips and suggestions.

Veterinarians should alert the State Veterinarian's Office of reportable diseases by calling (360) 902-1878.