Kansas Animal Health Agency Addresses Equine Disease Outbreaks

Kansas Reports Two Equine Disease Outbreaks

The Kansas Department of Agriculture Division of Animal Health has recently been informed of two separate incidents involving horses testing positive for reportable diseases. These cases have prompted immediate action from the agency, following established disease response protocols.

In mid-July, the department received notification from the National Veterinary Services Laboratory that a horse in Sedgwick County had tested positive for Equine Infectious Anemia (EIA). As a result, the facility and all horses on the premises were placed under quarantine until further testing of all exposed horses could be completed. Initial results suggest that additional horses are also testing positive for EIA. This disease is untreatable, and the response team is taking appropriate measures to manage the situation.

The horses at the facility that tested negative will be monitored and retested after 60 days. The infected horse that showed symptoms eventually died due to complications related to EIA. The Kansas Department of Agriculture has established a surveillance area within a quarter-mile of the affected premises and is collaborating with local officials and horse owners to identify any other animals that may have been in the area.

EIA does not pose a risk to humans but can spread among horses, mules, and donkeys. Transmission occurs through biting flies, contaminated medical instruments, or blood transfusions. Symptoms include fever, anemia, and edema, though some infected horses may not display any signs. All infected equines, even those without symptoms, remain carriers of the virus.

Although EIA is rare in the United States, it is more common in other regions globally. The U.S. manages the disease through regular testing before horses travel across state lines or participate in exhibitions. A standard test for EIA, known as the Coggins test, is required for these purposes.

This spring, the Kansas Department of Agriculture updated its regulations to require a negative Coggins test within the past 12 months for horses changing ownership or being used for exhibitions. These new rules supplement the existing requirement for a negative Coggins test for horses entering the state.

West Nile Virus Case in Harper County

In addition to the EIA cases, the Kansas Department of Agriculture Division of Animal Health has also confirmed a case of West Nile virus (WNV) in a horse in Harper County. WNV is a virus that can affect humans, horses, birds, and other species. Horses infected with WNV may show a range of symptoms, including depression, loss of appetite, fever, and severe neurological signs such as incoordination, weakness, and hypersensitivity to touch or sound. In some cases, the infection can be fatal.

Prompt veterinary care is essential if symptoms of WNV are observed in a horse. The infected animal in this case was not up to date on its vaccinations but is currently responding well to treatment. Horse owners are encouraged to consult their veterinarians and develop a vaccination plan for their animals.

WNV is preventable through annual vaccinations, which have proven highly effective. The virus is transmitted by mosquitoes, and while both horses and humans can be infected, it is not directly contagious between them or from horse to horse. Horse owners should take steps to reduce mosquito populations by eliminating stagnant water sources and using repellents.

WNV is classified as a reportable disease in Kansas, meaning that any confirmed case must be reported to the Kansas Department of Agriculture Division of Animal Health. This reporting requirement helps track the spread of the virus and ensures timely intervention to protect both animal and human health.