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Infectious Diseaseshigh

West Nile Virus (West Nile Fever, neurological)

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West Nile virus (WNV) is a mosquito-borne virus that can cause inflammation of the brain and spinal cord in horses. Most infected horses show no symptoms; if a horse becomes neurologically ill, however, the course is serious and a substantial proportion die or must be euthanised. A vaccine is available.

Veterinary care required

This condition belongs in veterinary diagnosis and treatment. Compounds are at most supportive.

Priority · vet & management

Neurological signs are an urgent veterinary case — call the vet immediately; diagnosis (blood sample/serology) and intensive supportive therapy are veterinary. West Nile fever is a notifiable animal disease in Germany and Austria: the vet/authority must be involved. The core protection is vaccination per veterinary recommendation, especially in endemic areas.

Possible causes

  • · West Nile virus (flavivirus)
  • · transmission via the bite of infected mosquitoes
  • · wild birds as the main host/virus reservoir; horse and human are dead-end hosts (no horse-to-horse/horse-to-human transmission)
  • · higher risk in the mosquito season and in distribution areas

Prevention

Vaccination according to veterinary vaccination recommendation (recommended by the StIKo Vet especially for horses in or travelling to distribution areas) as well as consistent mosquito protection (repellents, removal of standing water, stable management at dusk) lower the risk of disease.

Equiterna's take

Equiterna treats West Nile virus with a high urgency filter and clearly points out the notification requirement in Germany and Austria — the practical protection is vaccination plus mosquito management, compounds at most accompany the long convalescence.

Usage note

This content is for information and education. It does not replace veterinary diagnosis or treatment. If your horse shows signs of illness, consult a veterinarian.

Equiterna is an intermediary platform for equine knowledge, marketplace and tools — not a veterinary-medicines dealer, veterinary practice or pharmacy. Compound information is study-attributed and free of healing claims. Legal framework: Regulation (EU) 2019/6 / TAMG (DE/AT), Feed Regulation (EC) 767/2009, FEI Prohibited Substances List, HWG.