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SDSU ADRDL’s Active Surveillance for African Swine Fever

USDA has officially announced a surveillance effort for African Swine Fever (ASF) through the Animal and Plant Health Inspection Service (APHIS) working with the swine industry, the states, and veterinary diagnostic laboratories.  

This testing will include samples from high-risk animals, including sick pig submissions to veterinary diagnostic laboratories; sick or dead pigs at slaughter; and pigs from herds that are at greater risk for disease through such factors as exposure to feral swine or garbage feeding.

The USDA National Animal Health Laboratory Network (NAHLN) (of which the S.D. Animal Disease Research and Diagnostic Laboratory (ADRDL)) is a member will test samples from sick pigs showing 1 or more clinical signs or post mortem lesions as described below..

Clinical Signs

  1. Increased mortality rate
  2. Febrile – fever, lethargy, anorexia, depression, abortion
  3. CNS symptoms – lameness, recumbence, paddling
  4.   Hemorrhage – antemortem erythema, petechiae, hematoma, epistaxis

Post Mortem Lesions

  1. Hemorrhagic lymph nodes or organs
  2. Splenomegaly
  3. Tonsil – erosions, hemorrhage, necrosis, proliferation
  4.  Gastrointestinal – acute or chronic ulcers, button ulcers

Samples used for testing at the ADRDL will be 1) spleen; and if not available 2) tonsil; or if spleen or tonsil is not available, then 3) lymph node may be acceptable.

Both an ASF and Classical Swine Fever Virus (CSF) test will be conducted at the same time and negative results reported directly to the submitter.

There is no cost to the client.  The testing will be paid for by USDA.  Be sure to include the premise ID # (PIN) in order for it to qualify for testing.

ASF is a highly contagious and deadly disease affecting both domestic and feral (wild) pigs. It does not affect human health and cannot be transmitted from pigs to humans. ASF has never been detected in the United States.

“African Swine Fever is an area of high interest among the veterinary community and our swine industry, and we continue to take action to prepare for this deadly disease,” said Greg Ibach, Undersecretary for Marketing and Regulatory Programs. “While we are confident that our overlapping safeguards will continue to keep ASF out of the United States, an enhanced surveillance program will serve as an early warning system, helping us find any potential disease much more quickly. It will also minimize virus spread and support efforts to restore trade markets and animal movements as quickly as possible should the disease be detected.”

If you have any questions or comments, please contact the laboratory (605)/688-5171.

Thank you!