S O U R C E

OBTAIN CURRENT STATUS

Whatever your stated goals, it’s important to understand where PED has or has not been present in your herd. The testing of blood, feces and the environment may be essential in understanding your current status.

  • KNOW THE SYMPTOMS

    Because the PED virus can be transmitted quickly in herds, it is imperative to diagnose PED immediately once symptoms are apparent. Once a PED infection occurs in piglets, symptoms are usually seen 15 to 24 hours later, and may last up to three days. For prewean piglets infected with PED, the mortality rate can be alarmingly high.

    • Sows: watery diarrhea, loose feces, vomiting, off feed
    • Weaners and Growers: acute watery diarrhea with no blood or mucus, vomiting, off feed
    • Prewean Piglets: diarrhea, dehydration, vomiting, malnourishment, high mortality (3)
  • Testing

    A laboratory test is the only way to positively identify PED, since clinical symptoms are similar to those associated with transmissible gastroenteritis (TGE) and other diseases.

    Which test is right for you?

    There are three primary types of diagnostic testing available for PED:

    1. Serum antibody: A positive enzyme-linked immunosorbent assay (ELISA) test detects whether there’s been exposure to the PED virus or if there was passive transfer of antibodies from sow to piglet. A negative ELISA test tells us that the animal has not immunologically responded to the virus due to no exposure or very recent exposure, or that the animal was sufficiently exposed to the virus in the past and the antibodies have declined to non-detectable levels. Note: A negative ELISA test may not mean that PED is not present in the herd.
    2. Fecal antigen/Oral fluid antigen: This polymerase chain reaction (PCR) test detects whether the virus or a portion of the virus was present at the time of sampling using small samples of RNA.
    3. Environmental antigen: This PCR test detects whether the virus or a portion of the virus was present at the time of sampling using small samples of RNA. This test can help define the environmental level of virus following a break or can test the success of sanitation programs.

    Work with your herd veterinarian to establish a testing protocol customized for your operation. The following tests may be appropriate for diagnosing PED status:

    Replacement Gilts Sows Piglets Nursery,
    Grow/Finish
    Environmental
    Serum Serum Serum Serum
    PCR PCR PCR PCR PCR
  • Tips for Best Sample Collection
    • Ideal pigs to sample are those acutely affected with watery diarrhea.
    • Collect samples and immediately refrigerate.
    • Send samples overnight to a laboratory using an insulated box with ice packs.
    • Completely fill out laboratory submission form.
    HMC Diagnostics Lab
    USDA Reporting

    Boehringer Ingelheim Vetmedica, Inc.'s Health Management Center (HMC) is one of the leading swine-specific diagnostic laboratories in North America. HMC can conduct testing for PED, as well as provide a variety of other services.
    A definition of the cases that must be reported can be found on the APHIS website.

    To develop appropriate options for controlling PED on a national level, and to assess the extent of the outbreak in the U.S. pork industry, the USDA Animal and Plant Health Inspection Service (APHIS), Veterinary Services (VS), issued a Federal Order mandating the reporting of presumed or confirmed PEDv diagnoses in swine herds. (8) A definition of the cases that must be reported can be found here