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Methods for Inactivating PEDV in Hog Trailers

A new paper from Iowa State University summarizes four studies that evaluated individual aspects of trailer sanitation programs, including thermo-assisted drying and decontamination (TADD) systems and multiple disinfectants in the battle against Porcine Epidemic Diarrhea Virus (PEDV). [Source: National Pork Board]

In general, the researchers concluded that:

  • Only two time/temperature combinations studied were 100% successful at eliminating the PED virus:
    • 71C (160F) for 10 minutes
    • 20C (68F) for 1 week
  • Stalosan® F is ineffective at inactivating PEDV from contaminated hog trailers
  • Accel® (accelerated hydrogen peroxide) appears to effective at inactivating PEDV in presence of feces
  • A wider range of TADD configurations were found to be effective following wash and disinfection with Synergize®
    • 20°C for 12h to 68°C for 10m
    • Synergize® and wash alone were also effective o Underscores the importance and utility of wash and disinfection steps in trailer sanitation
  • Environmental swabs could not differentiate infectious from non-infectious PEDV
    • Implications for environmental sampling

To learn more, click to view the practical summary or the full study. Dr. Paul Thomas summarized the studies in a PowerPoint presentation that can be viewed on the AASV website.