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Abstract: Shortening Duration of Swine Exhibitions to Reduce Risk for Zoonotic Transmission of Influenza A Virus

Abstract: Shortening Duration of Swine Exhibitions to Reduce Risk for Zoonotic Transmission of Influenza A Virus

Reducing zoonotic influenza A virus (IAV) risk in the United States necessitates mitigation of IAV in exhibition swine. We evaluated the effectiveness of shortening swine exhibitions to <72 hours to reduce IAV risk. We longitudinally sampled every pig daily for the full duration of 16 county fairs during 2014-2015 (39,768 nasal wipes from 6,768 pigs). In addition, we estimated IAV prevalence at 195 fairs during 2018-2019 to test the hypothesis that <72-hour swine exhibitions would have lower IAV prevalence. In both studies, we found that shortening duration drastically reduces IAV prevalence in exhibition swine at county fairs. Reduction of viral load in the barn within a county fair is critical to reduce the risk for interspecies IAV transmission and pandemic potential. Therefore, we encourage fair organizers to shorten swine shows to protect the health of both animals and humans.

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Season 6, Episode 6: The Science Behind Sudden Sow Deaths

Video: Season 6, Episode 6: The Science Behind Sudden Sow Deaths

Recent necropsies have revealed new insights into unexplained sow deaths, helping producers better understand the causes behind these losses. A recent study led by Laura Solis, a graduate student at Iowa State University, examined why these deaths occur, many around farrowing. In some cases, animals were sent to the lab for further analysis, as discussed by Dr. Marcelo Almeida, assistant professor in the College of Veterinary Medicine at Iowa State University. The episode also features Dr. Chris Rademacher, clinical professor and swine extension veterinarian as well as associate director of the Iowa Pork Industry Center, who asks questions of what seasonal factors there were and management strategies that can influence herd health outcomes.