Equine Influenza Update – April 2026

We would like to make our clients aware of a recent increase in equine influenza (EI) cases across the UK, and to highlight the steps you can take to protect your horses.

According to the latest update from Equine Infectious Disease Surveillance (EIDS), there have been 21 confirmed outbreaks across 15 counties since late March. There has been a notable rise in cases in recent weeks, with additional outbreaks reported in previously unaffected areas. A significant number of these outbreaks have been linked to recent horse movements between premises, emphasising how easily this virus can spread. Importantly, there have also been a number of confirmed cases in Gloucestershire, making this particularly relevant for our local horse community.

Equine influenza is a highly contagious viral respiratory disease. It is primarily spread via droplets when infected horses cough, but it can also be transmitted indirectly via equipment, clothing, and people moving between horses. Infected horses can shed the virus for up to 10 days or longer, meaning infection can spread rapidly within a yard if not quickly identified and controlled. Continued reports of EI in Europe further highlight the ongoing risk.

Clinical Signs to Watch For

We strongly encourage all horse owners and yard managers to remain vigilant and monitor horses closely for signs of illness. Common clinical signs include:

• A dry, harsh cough

• Nasal discharge

• Fever (rectal temperature above 38.5°C)

• Lethargy or reduced performance

In some cases, signs may initially be mild, so regular monitoring - particularly twice daily temperature checking can help detect early infection.

What Should You Do?

If you notice any of the above signs, please contact us promptly for advice. Early intervention is essential in limiting spread and supporting recovery.

To help reduce the risk of infection, we recommend the following measures:

• Ensure vaccinations are up to date - having received a vaccination within the last six months provides the best protection against current circulating strains and helps to minimise the severity of clinical signs if infection does occur.

• Monitor horses closely - taking twice daily temperatures during periods of increased risk can help identify infection early.

• Minimise unnecessary horse movements - avoid travelling horses or introducing new arrivals where possible, particularly while cases are increasing.

• Isolate suspected cases immediately - any horse showing clinical signs should be isolated, and movement on and off the yard should stop until veterinary advice is given.

  
  

Why Vaccination and Vigilance Matter

Recent outbreak data shows that many affected horses were unvaccinated or had unknown vaccination status, reinforcing the importance of maintaining an up-to-date vaccination programme. While vaccination does not always prevent infection entirely, it plays a crucial role in reducing the severity of disease and limiting transmission.

With cases continuing to emerge across the UK, including locally, vigilance is key. Prompt recognition of clinical signs, responsible management, and good biosecurity can make a significant difference in controlling outbreaks.

We’re Here to Help

We understand that news of increasing equine influenza cases may be concerning. Our team is here to support you with advice on vaccination, biosecurity, and any concerns regarding your horse’s health.

If you have any questions or would like to discuss your horse’s vaccination status, please don’t hesitate to get in touch. Acting early helps protect not only your own horses, but the wider equine community.

EIDS_EI_update_23042026.pdf

Download PDF • 792KB