Animal HealthDiseasesEquine Infectious AnemiaPrevention

Equine Infectious Anemia (EIA) Prevention and Control

Information about how to prevent and control further spread of Equine Infectious Anemia (EIA).


Prevention and Control Measures

Preventive actions for EIA include insect control, not allowing horses to come in contact with horses of unknown EIA status, and no common needles or instruments used in medical applications. Horse owners can take a number of precautions to reduce the risk of infection:

  • Use disposable syringes and needles. Follow the rule of one horse—one needle.
  • Clean and sterilize all instruments thoroughly after each use.
  • Keep stables and immediate facilities clean and sanitary. Remove manure and debris promptly, and ensure that the area is well drained.
  • Implement insect controls. The local veterinarian or animal health official can provide information about approved insecticides and other insect–control measures. Avoid habitats favorable to insect survival.
  • Do not intermingle infected and healthy animals. Do not breed EIAV–positive horses.
  • Isolate all new horses, mules, and asses brought to the premises until they have been tested for EIA.
  • Obtain the required certification of negative EIA test status for horse shows, county fairs, race tracks, and other places where many animals are brought together.
  • Abide by State laws that govern EIA.

Montana Requirements

A Coggins test is required when a horse is imported into Montana, or exported out of Montana to another state.

Montana Recommendations

The Montana Department of Livestock recommends regular EIA testing as part of a good equine health management program, especially for those equines regularly in contact with other equines of unknown EIA status. In addition, having horses tested prior to purchase is highly recommended.

Animal Health Bureau

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Contact Information

Department of Livestock
Animal Health Bureau
PO Box 202001
Helena, MT 59620-2001
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