Potential Use for Serosurveillance of Feral Swine to Map Risk for Anthrax Exposure, Texas, USA

Dec 27, 2021

Anthrax is a disease of concern in many mammals, including humans. Management primarily consists of prevention through vaccination and tracking clinical-level observations because environmental isolation is laborious and bacterial distribution across large geographic areas difficult to confirm. Feral swine (Sus scrofa) are an invasive species with an extensive range in the southern United States that rarely succumbs to anthrax. We present evidence that feral swine might serve as biosentinels based on comparative seroprevalence in swine from historically defined anthrax-endemic and non-anthrax-endemic regions of Texas. Overall seropositivity was 43.7% (n = 478), and logistic regression revealed county endemicity status, age-class, sex, latitude, and longitude were informative for predicting antibody status. However, of these covariates, only latitude was statistically significant (β = -0.153, p = 0.047). These results suggests anthrax exposure in swine, when paired with continuous location data, could serve as a proxy for bacterial presence in specific areas.

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Video: Food Inflation and Pork Demand - Dr. Sylvain Charlebois

In this episode of The Swine it Podcast Show Canada, Dr. Sylvain Charlebois, Professor and Director of the Agri-Food Analytics Lab at Dalhousie University, discusses how food inflation is reshaping Canadian protein demand. He explains why pork remains competitively priced, consumer behavior, and why transparency, AI-assisted shopping, and protein demand will matter in the years ahead. Listen now on all major platforms!

"The potential of pork is there. We just need to see the product assume that role and take it away because all the elements are there."

Meet the guest: Dr. Sylvain Charlebois is a Professor in Dalhousie University's Faculty of Management and Director of the Agri-Food Analytics Lab. His research focuses on food distribution, food policy, food safety, food security, and traceability. Dr. Charlebois has written four books and more than 500 peer-reviewed and scientific articles. He holds a BComm from the Royal Military College, an MBA from UQAM, and a DBA from the University of Sherbrooke. Learn more from Dr. Sylvain Charlebois on The Swine it Podcast Show Canada, available on all major platforms.