Page 645 - The Veterinary Care of the Horse

weeks later. A marked rise in antibodies present indicates recent infection. A high reading

from a single blood test may indicate recent exposure to the virus. This test is not useful
VetBooks.ir in cases of abortion as there may be a considerable time lapse between infection of the
mare and the abortion occurring.

Treatment

Treatment of horses with respiratory signs includes:

• complete rest
• dust free management

• antibiotics as necessary if secondary bacterial infection occurs.

Horses with neurological signs require:
• careful nursing in a stable, covered yard or small, flat paddock as appropriate

• good bedding

• catheterization if they are unable to pass urine

• regular turning or support with slings if they are unable to stand
• regular provision of food and water which may involve intravenous fluids and other

supportive treatment.

Horses with genital lesions require:

• Good hygiene and cleansing of the external genitalia

• Application of antiseptic or antibiotic ointment
• No breeding activity until the lesions have healed and the vet has confirmed the animal is

free from disease.

Mares that have aborted do not usually appear ill or require any specific treatment. However,
they must be isolated as they can shed virus for up to one month.

Non-steroidal anti-inflammatory medications are beneficial for reducing a high

temperature and for pain relief. The antiviral drug acyclovir has been given orally to treat
horses with EHV infection, but it is poorly absorbed in the horse.

Control measures

If a pregnant mare aborts or a foal is ill or dies within a few days of birth, the cause should