Prevalence comparison among different MSHMP cohorts

This is our Friday rubric: every week a new Science Page from the Bob Morrison’s Swine Health Monitoring Project. The previous editions of the science page are available on our website.

University of Minnesota researchers Mariana Kikuti, Miranda Medrano, Marcello Melini, Carles Vilalta, Juan Sanhueza, Emily Geary, Cesar Corzo compare PRRSV disease status between systems that originally shared their sow herd status with MSHMP and those that joined the program later.

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PRRS 2021-2022 Exponentially Weighted Moving Average (EWMA) by State

This is our Friday rubric: every week a new Science Page from the Bob Morrison’s Swine Health Monitoring Project. The previous editions of the science page are available on our website.

This week we take a look at PRRS EWMA patterns in Iowa, North Carolina, Minnesota, Oklahoma, Nebraska and Illinois, thanks to research done by Mariana Kikuti, Emily Geary, Paulo Fioravante, Marcello Melini, Miranda Medrano, Cesar Corzo.

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What monitoring taught us about PRRS: a podcast episode

Dr. Cesar Corzo shares what he has learned about PRRS since becoming the lead investigator of the Morrison Swine Health Monitoring Project (MSHMP) in an episode of the Swine Doc Pod with Carthage.

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Environmental contamination assessment in farms undergoing an outbreak with PRRS 1-4-4 Lineage 1C

This is our Friday rubric: every week a new Science Page from the Bob Morrison’s Swine Health Monitoring Project. The previous editions of the science page are available on our website.

The Morrison Swine Health Monitoring Project take a look at whether PRRSv cases associated with the linage 1C, RFLP 1-4-4 variant can be detected in the outside areas of farms undergoing an outbreak.

Key Points

  • There is little understanding of contributing factors aiding the 1-4-4 L1C PRRSv rapid transmission and biosecurity breaches
  • Environmental detection in recently infected farms was possible although detection was low
  • Most positive samples originated from exhausting fans, showing the virus may exit a positive barn via that route
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Porcine reproductive and respiratory syndrome virus 2 (PRRSV-2) genetic diversity and occurrence of wild type and vaccine-like strains in the United States swine industry

This is our Friday rubric: every week a new Science Page from the Bob Morrison’s Swine Health Monitoring Project. The previous editions of the science page are available on our website.

In today’s article, The MSHMP team led by Dr. Corzo, describes PRRSV-2 genetic diversity and occurrence of vaccine-like strains in the U.S. over the course of 10 years.

Continue reading “Porcine reproductive and respiratory syndrome virus 2 (PRRSV-2) genetic diversity and occurrence of wild type and vaccine-like strains in the United States swine industry”