Notes
Outline
Equine Rhinopneumonitis
Caused by a herpes virus (EHV-1) that is similar to the one causing the common cold in humans
First seen in Thoroughbred horses in Kentucky, however now in most of the US, Canada, South America and many other parts of the world.
Symptoms
Acute, highly contagious
Respiratory infection in young horses
Abortion in pregnant mares (most common to abort between eight to eleventh month)
In some cases ataxia, paralysis and death occurs.
Transmission
Virus can survive up to seven weeks (dried) on horsehair, burlap, etc.
Virus is present in nasal discharge, saliva, blood, and fecal material during the acute stage. Also placenta and aborted fetus.
Also spread by contaminated feed, water, feed buckets, etc.
Treatment
Rest
Antibiotics or sulfa drugs to prevent secondary bacterial infection.
Recovered animals continued to shed virus.
Immunity following infection is short lived.
Preventation
Vaccinate
     - start vaccinations at 3 months of age
     -give booster at 6 month intervals in young horses
      -to prevent abortion  pregnant mares should be vaccinated at the 5th, 7th, and 9th months of pregnancy
 Read and follow the vaccine label directions.