06/19/2025
๐ ๐๐๐ฑ๐๐ฌ ๐๐จ๐ซ๐ ๐๐๐๐๐ข๐ง๐๐ฌ ๐๐๐ซ๐ข๐๐ฌ: ๐
๐ฅ๐ฎ-๐๐ก๐ข๐ง๐จ ๐๐๐๐๐ข๐ง๐ ๐ฆ
Two of the most contagious respiratory diseases in horses are Equine Influenza (Flu) and Equine Rhinopneumonitis (Rhino) and both can sideline your horse or even cause life-threatening complications. While these illnesses can look similar at first, understanding their differences is essential to protecting your horseโs health, especially in high-traffic environments like boarding barns, training facilities, and showgrounds.
๐ฌ ๐๐ก๐๐ญ ๐๐ฌ ๐๐ก๐ข๐ง๐จ๐ฉ๐ง๐๐ฎ๐ฆ๐จ๐ง๐ข๐ญ๐ข๐ฌ (๐๐ก๐ข๐ง๐จ)?
Rhino is caused by Equine Herpesvirus (EHV-1 & EHV-4)
โช EHV-1: Can cause respiratory illness, abortion in pregnant mares, and neurologic disease (EHM)
โช EHV-4: Primarily causes respiratory signs
Symptoms may include:
โช๏ธ Fever
โช๏ธ Nasal discharge
โช๏ธ Lethargy and poor appetite
โช๏ธ Swollen lymph nodes
โช๏ธ Incoordination or hindlimb weakness in neurologic cases
โช๏ธ Abortions in mares (typically late-term)
๐ฌ๏ธ ๐๐ก๐๐ญ ๐๐ฌ ๐๐ช๐ฎ๐ข๐ง๐ ๐๐ง๐๐ฅ๐ฎ๐๐ง๐ณ๐ (๐
๐ฅ๐ฎ)?
Caused by the equine influenza A virus (EIV), itโs one of the most contagious respiratory diseases in horses. It spreads fast, especially where horses travel, show, or are in close contact.
Symptoms may include:
โช๏ธ Sudden high fever (up to 106ยฐF)
โช๏ธ Harsh, dry cough
โช๏ธ Thick nasal discharge
โช๏ธ Fatigue, muscle soreness
โช๏ธ Inappetence and reluctance to move
๐ ๐๐ซ๐๐ง๐ฌ๐ฆ๐ข๐ฌ๐ฌ๐ข๐จ๐ง ๐จ๐ ๐
๐ฅ๐ฎ & ๐๐ก๐ข๐ง๐จ:
Both diseases are spread via aerosolized droplets (sneezing, coughing), contaminated gear or handlers, direct contact, shared tack, and latently infected horses during stress or illness. Horses can shed the virus for up to 10 days, even without severe symptoms!
๐ Prevention is Key
Thereโs no cure for either disease, but vaccination is your best defense. At Signature Equine Hospital, we recommend a tailored vaccine schedule based on your horseโs age, travel habits, and risk level.
๐ Additional Prevention Tips:
โช Isolate new or sick horses for 2โ3 weeks
โช Donโt share water buckets or grooming tools
โช Limit shared water sources and communal equipment
โช Clean and disinfect stalls, tack, and grooming tools regularly
๐๏ธ ๐๐๐๐๐ข๐ง๐๐ญ๐ข๐จ๐ง ๐๐๐๐จ๐ฆ๐ฆ๐๐ง๐๐๐ญ๐ข๐จ๐ง๐ฌ (๐๐๐๐ ๐๐ฎ๐ข๐๐๐ฅ๐ข๐ง๐๐ฌ):
โช Foals: Begin series at 6โ9 months
โช Adults: Annual or semi-annual boosters
โช Pregnant mares: Rhino at 5, 7, and 9 months of gestation
โช High-risk horses (traveling, showing, breeding): Require more frequent boosters
Whether you compete, trail ride, or own retirees, respiratory viruses donโt discriminate. Protect your horse with a proactive vaccine plan and biosecurity protocols! Call us today with any questions, or to get on the schedule for your horse's vaccines! Have a whole herd or barm you need vaccinated? We can help! We have several Ambulatory Veterinarians who are available for Farm Calls!
www.sehtx.com | ๐ฑ 254-968-7898