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
It’s National FFA Week, and today we’re celebrating Alumni Day by highlighting some inspiring former FFA members making an impact in agriculture and beyond.
Alan Bjerga of the National Milk Producers Federation discusses the Dairy Margin Coverage program, recent improvements, and what producers need to know ahead of this week’s enrollment deadline.
Claire Woeppel, Central Region Vice President with the National FFA Organization, joined us to discuss Alumni Day, the lasting impact of FFA supporters, and why honoring that legacy matters during National FFA Week.
UNL Extension’s Troy Walz discusses the Nebraska Ranch Practicum, where sessions are held, how producers can get involved, and what ranchers can gain from participating in the program.
Singer-songwriter and RanchHER Clare Dunn reflects on the importance of National FFA Week, her time in FFA, and her commitment to advocating for agriculture and rural issues.
Border closures tied to the threat of New World Screwworm continue to stall Mexican fed cattle imports, tightening U.S. feeder cattle supplies over time — triggering feedlot closures that hinder herd rebuilding efforts, threaten the beef supply chain, and shrink production while consumer prices stay elevated.

Marion is a digital content manager for RFD News and FarmHER + RanchHER. She started working for Rural Media Group in May 2022, bringing a decade of digital experience in broadcast media and some cooking experience to the team.

LATEST STORIES BY THIS AUTHOR:

Jennifer Tirey of the Illinois Pork Producers Association joined us to discuss efforts to bring pork back into Chicago Public Schools, the nutritional benefits for students, and what the decision could mean for pork producers across the state.
Farmer and retired colonial Joe Ricker joined us to highlight Ag Safety Awareness Program Week, share his work supporting veterans and farmers, and offer guidance on making safety a year-round priority on the farm.
Dry conditions may tighten hay supplies before summer growth. John Mays of Central Life Sciences joined us to discuss the risks of extended grain storage, how quality can be affected over time, and what growers can do to protect their grain while waiting for market opportunities.
High fertilizer costs and global risks threaten spring margins for growers.
Be sure to catch Kim Collingsworth on Gaither Gospel Hour’s new special, “His Gift, My Story,” tonight, Friday, Feb. 27, at 6 p.m. ET, on RFD Network and streaming on RFD+
Rural Lifestyle & Entertainment Shows
“California Bountiful” brings you up close with the people, places, food and farms that make California so delicious! The weekly show delivers a fun, entertaining and educational look at California’s farm to fork lifestyle, and everything in between.
When it comes to truck and tractor pulling, the National Tractor Pullers Association (NTPA) is a world leader as well as the sport’s oldest and most respected entity when it comes to premier competition. They host more than 280 sessions of pulling action throughout the U.S. and Canada.
“Small Town, Big Deal” follows hosts Rodney Miller and Jann Carl across the country as they scour rural America for the best stories of faith, hope, patriotism, and good common sense that our small towns and farming communities have to offer.
“Somewhere West of Wall Street” is simply the most recent addition to the long list of noteworthy accomplishments by the Renaissance cowboy, singer-songwriter, poet, author, and show host Red Steagall. Join Red and his quarter horse, Grey Dog, as they explore the people, places, and stories of the American West.
Join host Allen Treadwell and the Hayden Outdoors crew plus landowners across the country as we bring you exciting adventures on the land with the most amazing properties for sale and learn what it means to broker these magnificent properties.