Equine Influenza: recognising the signs and protecting your horse this summer
Recent weeks have seen a sudden rise in confirmed cases of equine influenza across the UK. As horses begin to travel more frequently for competitions, clinics, and leisure activities, the risk of exposure inevitably increases. With this in mind, it’s important for owners to remain vigilant and familiar with the early signs of infection.
Equine influenza is a highly contagious viral respiratory disease. It spreads rapidly through close contact between horses, as well as via contaminated equipment, clothing, and even the air over short distances. While many horses recover well with appropriate care, the illness can cause significant disruption and, in some cases, lead to complications.
What signs should you look out for?
The onset of equine influenza is often sudden. The most common symptoms include:
A high temperature (often 38.5°C or above)
A harsh, dry cough that may persist for several weeks
Nasal discharge, which typically starts clear and may become thicker or discoloured
Lethargy and a noticeable drop in energy levels
Loss of appetite
Enlarged or tender lymph nodes under the jaw
In some horses, particularly younger or older individuals, symptoms may appear more severe. Secondary bacterial infections can also develop, prolonging recovery.
Why vigilance matters
Because equine influenza spreads so easily, early detection is key to limiting outbreaks. If your horse shows any of the signs above, we would advise isolating them immediately and contacting your vet for guidance. Avoid attending events or moving horses on and off the yard until a clear diagnosis is established.
Reducing the risk: vaccination and biosecurity
Vaccination remains one of the most effective tools we have in reducing both the severity of disease and its spread. While many horses are vaccinated annually in line with competition requirements, there is growing consideration for more frequent boosters in higher-risk individuals.
Horses that travel regularly, attend shows, clinics, or camps, or mix with unfamiliar horses over the summer months may benefit from a proactive 6-month booster. This approach can help maintain a higher level of immunity during periods of increased exposure.
In addition to vaccination, simple biosecurity measures can make a meaningful difference:
Avoid sharing equipment between horses
Wash hands and change clothing after handling unfamiliar horses
Monitor temperatures routinely, particularly after travel
Isolate new arrivals where possible
A measured, preventative approach
Equine influenza is an unwelcome interruption to what should be an active and enjoyable season. By recognising the early signs and taking sensible preventative steps, we can collectively reduce its impact.
If you would like to review your horse’s vaccination status or discuss whether a 6-month booster may be appropriate, please don’t hesitate to get in touch on the below:
E: office@starlingequinevets.co.uk
T: 01473 970 393
Staying informed and prepared is the best way to keep your horse healthy and comfortable throughout the summer months.