Is Your Horse Showing Signs of EHV? An Equine Expert Explains Next Steps to Take

A leading Oklahoma veterinarian explains common symptoms of Equine Herpes Virus (EHV) and warns owners to remain vigilant because it can spread quickly among horses.

WEATHERFORD, Oklah. (RFD-TV) — An ongoing Equine Herpes Virus (EHV) outbreak was recently detected following a rodeo event in Waco, Texas — it is raising concerns for horse owners across the South, but especially in nearby states.

A leading Oklahoma veterinarian is speaking out on the disease’s origin, warning the virus can spread quickly and that owners need to remain vigilant.

“EHV is a virus, a herpes virus, to be exact, in horses,” explains Dr. Jason Thorne, DVM, and the owner of Territory Medicine in Weatherford, Okla. “The good thing, for starters, is that it doesn’t affect humans -- but we can carry it, however. So, the herpes virus comes in two very distinct serovars, Type I and Type IV. There are other types, but in our population, really, it’s just I and IV causing problems. I believe what happened in Waco was going to be an EHV I, and that typically starts out as a predominantly respiratory infection, you know, notable to all of us, as far as a coughing horse or something like that, and that virus was probably shed by a horse that harbored it.”

With cases appearing across the region, Thorne said the most important step for owners is to act quickly if they suspect their horse is getting sick. Key signs of EHV include respiratory symptoms and fever.

“If you’re thinking your horse is looking like it might be sick or getting suspicious, then get yourself a digital thermometer,” he said. “Take a temperature at home, because, you know, we want you to stay home. We don’t want you to have to haul anywhere if you can help it. But get a temperature, then double-check it, and if it is over 101.5, get on the horn with your veterinarian and describe what you’re seeing and where you’ve been. What some people seem to forget with the rush of an outbreak is, wait a minute, where have I been? And not necessarily my horse, but where have I been with other horses and came home?”

Thorne urged owners to watch their horses closely and report any signs of illness immediately. As a precaution, many organizations are canceling events, urging owners to stop hauling, and implementing quarantine measures. Experts said vaccination remains one of the best tools to prevent EVH infections.

Related Stories
Learn more about the history of Arbor Day, what trees are best for your backyard or farm, and how to find free ones that you can plant!
Created by professionals who are horsemen themselves, Equestrian Nation is a program featuring stories about the scores of different equine breeds and disciplines from all around the world.

Marion is a digital content manager for RFD-TV and The Cowboy Channel. She started working for Rural Media Group in May 2022, adding a decade of experience in the digital side of broadcast media and some cooking experience to the team.

LATEST STORIES BY THIS AUTHOR:

Lewie Pugh, with the Owner-Operator Independent Drivers Association, joined us on Monday’s Market Day Report to share his perspective on what the bill could mean for truckers.
With port fees now lifted, economists believe that could help ease tensions. However, American Farm Bureau Federation (AFBF) economist Faith Parum said trade deals with smaller Asian countries are helping stabilize the ag economy.
Ohio AgNet’s Dusty Sonnenberg takes us up in the cab with a popcorn farmer bringing in this year’s haul.
The DOJ’s new antitrust probe could reshape beef-packer behavior, with potential impacts on fed-cattle prices, processor margins, and long-term competition across the supply chain.
Congressman Blake Moore of Utah discusses the bill’s potential to promote both economic growth and healthier forests on this week’s Champions of Rural America.
Mike Newland with the Propane Education & Research Council shares how producers can prepare for winter weather and the benefits of propane.
Rural Lifestyle & Entertainment Shows
Brought to you by Gus Arrendale & Springer Mountain Farms, join dynamic bluegrass duo Dailey & Vincent as they welcome scores of fabulous bluegrass, country, and gospel music acts as special guests. Loads of laughs, your favorite guests galore, and lots of good times are guaranteed. Don’t miss all the fun!
Enjoy traditional country music from modern-day troubadours The Malpass Brothers. Each episode stars the brother duo of Chris & Taylor Malpass along with a featured celebrity guest– and loads of clever humor.
The affable and unassuming international singing star Daniel O’Donnell is one of Ireland’s best known performers – from Australia to Alaska.
Join popular polka performer Mollie Busta as she hosts the weekly “Mollie B Polka Party” on RFD-TV! The one-hour program features the nation’s top polka bands and a wide variety of ethnic styles produced on location at music festivals from around the country.
Ray’s Roadhouse is a weekly program featuring the music of Ray Benson and Asleep at the Wheel. Ray and his band Asleep at the Wheel has had a more than 50 year career in the music industry and over the years have earned nine Grammy Awards. The program also will feature guest performers such as Pat Green, Stoney LaRue and Kelly Willis.