Skip to main content

Animal Disease Risk Pseudorabies

Disease surveillance, eradication, and control programs have achieved significant success over the years in reducing animal disease in the U.S. Yet animal disease remains a reality in the U.S. as illustrated in the following examples.

Click on each example to read how the inability to effectively trace diseased animals can have widespread consequences.

A cow

Cattle - Bovine Spongiform Encephalopathy (BSE)

Group of cows

Cattle - Bovine Tuberculosis

A pig

Swine - Psuedorabies Virus

The following case study illustrates how lack of identification can quickly impact an industry. Animals from the diseased herd were shipped to at least 20 other operations, and the lack of written records and premises registration complicated the investigation.

Pseudorabies virus (PRV) is a viral disease affecting swine. It is fairly prevalent in the United States, and is usually deadly among baby pigs. The disease in adult pigs is usually not severe, although some strains can be deadly.


  • An outbreak of pseudorabies occurred in Wisconsin in April 2007

Investigative Summary:

  • Swine were exposed to feral hogs
  • Owner had no written records, and could only rely on memory to identify diseased animals and trace movements
  • At least 20 other owners received animals from the index herd, several of which did not possess a premises identification number


  • Outbreak jeopardized pseudorabies eradication status in a significant pork producing State
  • Loss of status would require additional testing requirements and lead to lost marketing opportunities


Poultry - Exotic Newcastle Disease (END)

A horse

Equine - Equine Viral Arteritis (EVA)

printprinter friendly
Complementary Content