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
Continue reading “Environmental contamination assessment in farms undergoing an outbreak with PRRS 1-4-4 Lineage 1C”

Breeding herd Senecavirus A infection: understanding its persistence

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, Dr. Guilherme Preis, PhD candidate working with Drs. Cesar Corzo and Fabio Vannucci, shares his latest results about Senecavirus A persistence in sow farms after an outbreak.

Key points

  • Senecavirus A (SVA) continues to be responsible for an important number of FAD investigations.
  • SVA continues to circulate in breeding herds for up 21 weeks after clinical signs had been detected.
  • Heat check boars may contribute to population persistence of this virus. 
Continue reading “Breeding herd Senecavirus A infection: understanding its persistence”

Use of test and removal strategy to contain an ASFV outbreak in a farm

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.

Today, Dr. Yao and collaborators from PIC, New Hope Liuhe, and University of Cambridge describe the implementation of a test and removal strategy on an African Swine Fever virus (ASFV) infected farm, highlighting the importance of early detection and rapid responses to contain the virus in a population.

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CVM researchers awarded $1 million to develop strategies to protect animals during disease outbreaks

The University of Minnesota College of Veterinary Medicine’s (CVM) Secure Food System (SFS) team collaborate with public and private partners to develop tactical biosecurity strategies to limit disease spread for specific animal movements based on risk-based science. The awarded work pursues these objectives:

  • Assess the risk of animal movements and their agricultural products during an outbreak and translate the risk-based science into workable movement permit guidance; 
  • Develop tactical strategies to limit foreign animal disease (FAD) outbreak spread in integrated agriculture systems; and 
  • Conduct outreach on emergency preparedness and the SFS platform. 
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Use of Whole Genome Sequencing during a PRRSv outbreak investigation

We hope our US readers had a great Thanksgiving surrounded by loved ones. We are grateful that all of you keep reading us week after week and we hope we can continue providing you with valuable content for a long time!

This week, Drs. Sunil Mor and Albert Rovira from the University of Minnesota Veterinary Diagnostic Laboratory explain how we can use whole genome sequencing during a PRRS outbreak investigation.

Key Points

  • Viral recombination is documented in PRRSv
  • Whole Genome Sequencing can provide the detailed information to better understand recombination and PRRSv dynamics
Continue reading “Use of Whole Genome Sequencing during a PRRSv outbreak investigation”