Temporal stability of swine movement networks in the U.S.

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. Dennis Makau from the VanderWaal lab is sharing a project on the importance of swine movement to identify farms with a high risk of disease outbreak.

Key Points

  • Animal movement is a key factor in the U.S. swine industry and is an important risk factor for disease transmission
  • Animal movement data combined with social network analysis can inform risk-based surveillance and control
  • Using production system movement data, it was possible to identify the time window of data needed to gauge connectivity and identify high-risk and high-spread farms
  • Using previous data up to two years old is still better than choosing randomly implemented interventions to manage disease spread, especially in cases of outbreaks transmitted via animal movements
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Leman conference: Research abstracts are due July 7th

Submit your research abstract for the Allen D. Leman Swine Conference, September 18-21, 2021.

The hybrid (in-person and virtual) conference will bring science-driven solutions to the complex challenges facing the swine industry. We need your help to fulfill that promise.

Abstracts for posters and oral presentations can be submitted online through July 7, 2021.

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Assessing Senecavirus A shedding and transmission in growing pig populations

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, Drs. Preis and Corzo are inviting you to participate in an AASV-funded project regarding the epidemiology of Senecavirus A in growing pigs.

Continue reading “Assessing Senecavirus A shedding and transmission in growing pig populations”

Histological Lesions and Replication Sites of PCV3 in Naturally-Infected Pigs

A team of researchers led by Dr. Fabio Vannucci investigated the lesions associated with a natural infection by Porcine Circovirus 3. They focused their study on histological lesions as well as replication sites to get a better understanding of this virus’ pathology. The article is available in open access on the journal’s website.

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Temporal stability of swine movement networks in the U.S.

Efficient and highly effective control of infectious diseases can be achieved by targeting interventions towards farms that are highly connected “super-spreaders” in animal movement networks. However, from an implementation standpoint, it is unclear how much movement data is required to gain an accurate picture of farm connectivity, nor how quickly movement networks change over time. For example, can movement data from last year be used to identify potential super-spreaders this year? How often do such analyses need to be updated? Answering these questions is key to moving from science to practice in terms of successful deployment of network-based targeted control strategies in swine production systems. In this study, Dr Dennis Makau and the VanderWaal lab aim to answer these questions for production systems in the United States.

Continue reading “Temporal stability of swine movement networks in the U.S.”