Animal HealthDiseasesPseudorabiesPrevention

Pseudorabies Prevention and Control

Information about how to prevent and control further spread of Pseudorabies.


Pseudorabies can be prevented primarily through:

  • Biosecurity
  • Vaccination
  • Containment of infected herds

In 1989, the USDA established a voluntary eradication program for pseudorabies in the United States. The program is cooperative in nature and involves Federal, State, and industry participation. USDA's Animal and Plant Health Inspection Service (APHIS) coordinates the national pseudorabies eradication program, State governments promulgate and enforce the intrastate regulations, and producers contribute by having their herds tested and instituting control and eradication measures. The program's primary activities include surveillance, herd monitoring, and herd cleanup.

The use of PRV vaccine is regulated on a state-by-state basis. States with very low prevalence or no PRV do not allow vaccination. Vaccination is allowed only by special permission in Stage IV states and is prohibited in Stage V states.

Although relatively effective vaccines with different gene deletions are available, in order to have uniformity in testing and test interpretation, only G1-deleted vaccines are allowed at this point in the eradication program. The use of genetically engineered (gene-deleted) modified-live-virus (MLV) vaccines with a compatible diagnostic serologic test allows differentiation of antibodies induced by vaccine from those induced by field virus.

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