May Domestic Swine Disease Monitoring Report Now Available

May 09, 2025

The Swine Health Information Center’s (SHIC) May Domestic Swine Disease Monitoring Report is available.

This month’s Domestic Swine Disease Monitoring Report brings information about the spike in PRRSV case positivity in wean-to-finish sites. Comparing the April PRRSV positivity for finishing sites with previous years’, it was the highest April positivity since 2018. In addition, the PRRSV variant 1C.5.32 had the highest number of detections for any variant in 2025. Together with the original L1C.5 variant, they represented 42% of all the ORF5 sequences recovered from the SDRS participant VDLs. The report includes a bonus page about the new PRRSV nomenclature and its implementation in the SDRS dashboards and BLAST tool. PEDV had increased regional case positivity in sow farms, mainly in Minnesota. As expected, the seasonal spike in influenza A case positivity occurred in April, repeating the trend of increased positivity in the spring season. In the first quarter of 2025, Mycoplasma hyopneumoniae had the lowest number of historical confirmed tissue diagnoses.

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Video: What It Takes to Stop African Swine Fever - Dr. Jishu Shi

In this episode of The Swine it Podcast Show Canada, Dr. Jishu Shi, Professor of Vaccine Immunology at Kansas State University, discusses African swine fever prevention and vaccine development. He explains why ASF differs from classical swine fever and swine influenza, how the disease threatens trade and pork production, why immunization safety remains a critical hurdle, and what producers can do now to reduce the risk of introduction. Listen now on all major platforms!

"Before a safe and efficacious vaccine for ASF can be commercialized, what we really have is prevention."

Meet the guest: Dr. Jishu Shi is Professor of Vaccine Immunology and the Dr. Wayne & Hilda Appleton Endowed Professor at Kansas State University’s College of Veterinary Medicine. He directs the Center on Biologics Development and Evaluation and the U.S.-China Center for Animal Health. A veterinarian and vaccine immunologist, Dr. Shi has focused on vaccines for pigs and has worked on African swine fever vaccine development, control, diagnostics, and international training since 2018. Learn more from Dr. Jishu Shi on The Swine it Podcast Show Canada, available on all major platforms.