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: Why Swine Field Research Matters - Dr. Stephen Frazer

In this episode of The Swine it Podcast Show Canada, Dr. Stephen Frazer, swine veterinarian at Demeter Services Vétérinaires, explains how field research connects university science with real commercial swine production. He discusses research design, economic impact, external validity, health challenges, and practical implementation on farms. Dr. Frazer also shares how applied research helps producers stay competitive with modern genetics and production systems. Listen now on all major platforms!

"Field research applies rigorous scientific methods within commercial production systems while focusing on practical economic outcomes that directly affect modern swine operations."

Meet the guest: Dr. Stephen Frazer / stephen-frazer-5769b7141 completed both a Master of Veterinary Science and a Doctor of Veterinary Medicine at the Université de Montréal. Currently working as a swine veterinarian at Demeter Services Vétérinaires, Dr. Frazer focuses on applied field research, production health, and practical strategies that improve commercial swine operations. Learn more about field research and swine production by listening to Dr. Stephen Frazer on The Swine it Podcast Show Canada, available on all major platforms.