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Equine Diseases - Herpes
Equine Herpes is also known as "The Cough" or "The Virus". Equine Herpes Virus is a highly infectious viral disease with 5 different strains but the two most common strains are EHV-1 and EHV-4.
EHV-1 (also known as Rhinopneumonitis) can cause respiratory diseases, abortions, neurological disease and paralysis
EHV-4 mainly causes respiratory disease but can also cause abortions.
Equine Herpes is spread via the respiratory tract and can survive for as long as up to 35 days in the environment.
Regardless of whether or not you notice symptoms of Equine Herpes in your horse, you should speak to your vet about vaccination and booster programmes against the Equine Herpes virus. This can be done at the same time as influenza and tetanus vaccinations. Vaccination is generally recommended for broodmares and most benefit is obtained if your horse is vaccinated before any perceived risk of infection. None of the current vaccines claim protection against the neurological form of EHV infection. Pregnant mares should be vaccinated in the 5th, 7th and 9th month of pregnancy. This is very effective in preventing abortion.
Mares that abort due to EHV-1 usually do not incur any damage to the reproductive area. It would seem that the same mare rarely aborts due to EHV in 2 successive seasons. This would seem to indicate that natural infection provides immunity and some degree of protection from Equine Herpes.
SYMPTOMS OF EQUINE HERPES
CAUSES OF EQUINE HERPES
Equine Herpes is highly contagious and is caused by any of the following:
TREATMENT OF EQUINE HERPES
A horse showing any of the signs of Equine herpes should be isolated and a vet called immediately. A blood test is available to see if a horse has recently been exposed to the virus as well as several other tests which your vet may consider necessary to confirm a diagnosis.
Treatment will be prescribed such as
Anti-inflammatory medication ( banamine, DMSO, steroids)
IV fluid therapy if the horse is dehydrated
Cautherisation several times daily if difficulty urinating
Medication to support bladder function
Vaccination to work against both strains of the virus
Use of a sling if horse has trouble rising
Following on from any of the above treatment, the infected horse should be isolated immediately and avoid any contact whatsoever with other horses.
Try to limit one person only to treating and caring for the infected horse
Maintain good stable management ensuring the horse's stall is safe and well-bedded
If you have other horses, keep a careful watch for the spread of infection.
Strict attention to hygiene including proper hand washing is imperative.
Thorough cleaning and disinfection of facilities and equipment are needed to fight the Equine Herpes virus. Disinfectant manufacturing firms should be researched for thorough knowledge regarding the ability of their disinfectants to combat EHV.
Make sure you remove all organic debris like manure and nasal secretions before disinfecting.
The general prognosis for recovery is good with improvement seen within a few days of treatment, but sometimes a period of several weeks to more than a year may be required before horses with severe deficits show complete recovery whilst 4 – 6 weeks of rest should be allowed after recovery from the respiratory form of the disease.