African Swine Fever (ASF)

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(7-28-21) African Swine Fever has been confirmed in the Dominican Republic.

The USDA announced the confirmation through its Foreign Animal Disease Diagnostic Laboratory, through an existing cooperative surveillance program. Currently pork and pork products from the Dominican Republic are prohibited entry to the U.S. due to existing classical swine fever restrictions. Read the official USDA statement and plans to keep the disease from entering the U.S.

Also, see these resources.


African swine fever virus (ASF) is a serious, highly resistant, viral disease. Since August 2018, ASF has been rapidly spreading throughout China and Asia. U.S. swine industry organizations are working continuously on prevention and response to help keep ASF out of U.S. pig farms. ASF cannot be transmitted to humans, so it is not a public health or food safety concern. However, it can spread rapidly in pig populations by direct or indirect contact, and there is currently no vaccine or treatment. That’s why it is essential for the U.S. swine industry to be well informed and well prepared should an ASF outbreak ever reach the United States.

Foreign Animal Disease Preparation Guide

Check out our FAD Preparation Guide here. We've put together a compilation of information, steps to take on your farm, and resources to help you get started in preparing and protecting your farm from FADs. Learn what might happen if an FAD is diagnosed in the U.S., how you can prepare with traceability, disease monitoring, biosecurity, and contingency planning, and find a collection of helpful resources related to African Swine Fever and FADs.

Where is ASF?

Eleven countries in Asia have now confirmed outbreaks of ASF. Most recently in Indonesia.

  • Map of ASF outbreaks in Asia Source: Food and Agriculture Organization of the United States.
  • Map of ASF outbreaks in South Korea. Right click on the map legend to translate to English. Source:
  • Critical information for producers

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    Additional ASF Resources

    Click on the headings below to view more videos, articles, and fact sheets about ASF.

    ASF general information: click to expand

    Videos detailing first-hand experience with ASF in Europe and Russia, technical fact sheets, global disease monitoring reports and more.

    Biosecurity click to expand

    • Biosecurity resources for producers from Secure Pork Supply.
      Implementing enhanced biosecurity plans will help prevent exposing animals to ASF, and other FAD. The resources on this page can help you assess and enhance your biosecurity plan.
    • Declaring Farm Visits in ASF positive countries to customs.
      This newsletter from Swine Health Information Center details what to declare to US Customs and Border Patrol when returning from an ASF or FAD positive country, what process should follow after declaring animal contact, and how to report your experiences with US Customs and Border Patrol after traveling.

    Feed ingredient biosecurity

    • Dr. Scott Dee - Transboundary Feed Transmission (32:20)
      Dr. Dee from Pipestone Area Research presents his research on the role of feed ingredients in the potential transmission of transboundary diseases. He describes the potential for feed ingredients imported into the U.S to harbor foreign pathogens, and the role of some feed mitigation strategies. From the 2018 ISU James D. McKean Swine Disease Conference. Read the full published article here.
    • Dr. Cassandra Jones - Feed Mill Biosecurity (30:45)
      Dr. Jones from Kansas State University presents the latest findings related to feed mill biosecurity. Dr. Jones shares results on how long PEDV can be maintained within a feed mill, pathogen surveillance in feed mills, and feed mitigation strategies for both foreign and domestic pathogens. From the 2018 ISU James D. McKean Swine Disease Conference.
    • Dr. Scott Dee - Risk of African Swine Fever (ASF) virus in feed and mitigation strategies (12:54).
      Presentation from the 2018 Allen D. Leman Swine Conference.
    • Kansas State University FAQ on ASFV and CSFV in feed  link opens in new window/tab
      While feed and ingredients are not the most likely sources of introduction and transmission, they are a documented vector for disease such as ASF. This FAQ fact sheet has information on ingredients, transmission, feed analysis and possible mitigation.
    • Focus on feed ingredients to combat ASF threat
      National Pork Board news release describing potential risks for feed ingredients, and how producers and feed suppliers can work together to mitigate these risks. 
    • Feed ingredient safety fact sheet  link opens in new window/tab from Swine Health Information Center.
      Questions and information to help producers work with feed suppliers to make decisions and minimize ASF risk from feed ingredients 
    • Holding time calculations for feed ingredients from Swine Health Information Center

    FAD Preparedness Resources click to expand

    Foreign animal disease preparation resources click to expand

    • CO2 Manual: The following is a manual for the construction of a passive vaporization CO2 depopulation chamber.  The manual includes the parts, costs and assembly of this system in the event of depopulation is needed according to the AVMA depopulation guidelines.
    • V-Restrainer with Pneumatic Captive Bolt Gun Manual: The following is for the construction, assembly and operation of a V-restrainer trailer to be used in conjunction with a commercial electrical stunner and pneumatic captive bolt gun for depopulation according to AVMA depopulation guidelines.
    • Foreign animal disease (FAD) preparation checklist from National Pork Board 
    • Foreign animal disease (FAD) information from Secure Pork Supply
      Information on African swine fever (ASF), classical swine fever (CSF) and foot and mouth disease (FMD)
    • Secure Pork Supply Planning materials
      The SPS plan for continuity of business if ASF, CSF or FMD is found in U.S. livestock.

    U.S. pork industry response to ASF click to expand


    Questions? Contact an IPIC specialist

    Russ EukenChris Rademacher, DVM