Call for Participants: Production Impacts of PRRSV-2 1C.5.32 and Other Variants (1A.2, 1H.18)

Nov 13, 2025

By Abbey Canon

The University of Minnesota Swine Group is seeking sow farms and grow-finish farms that have recently broken with PRRSV-2 variant 1C.5.32, variant 1A.2, or 1H.18 to contribute to a research study on PRRSV-2 virulence. This study addresses the virulence and production impacts of a novel PRRSV-2 variant, denoted as 1C.5.32, which began spreading rapidly in the Midwest in late 2024. We aim to quantify this new variant’s virulence and production impacts in sow farms and nursery-age pigs in comparison to other prevalent variants (1A.2 and 1H.18), and quantify the role of co-infections in shaping PRRSV severity..

Eligibility:

Sow farms and grow-finish farms with recent PRRSV-2 outbreaks associated with 1C.5.32, 1A.2, or 1H.18.
Willingness to share production records, especially related to mortality, morbidity, vaccination history, and interventions from ~5 months prior to outbreak onset through ~5 months post-outbreak
Located within 4 hours of Twin Cities (or willingness of field veterinarian to collect and send samples to UMN).

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