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: Inside the National Swine Health Strategy - Dr. Dustin Oedekoven

In this episode of The Swine it Podcast Show, Dr. Dustin Oedekoven, Chief Veterinarian at the National Pork Board, explains the producer-led National Swine Health Strategy and why it is essential for improving U.S. swine health. He discussed industry collaboration, the strategy's initial priorities, why PEDV is the first focus for elimination, research initiatives, and the long-term vision for healthier herds. Listen now on all major platforms.

"The National Swine Health Strategy creates a coordinated approach that moves the entire industry toward common health goals."

Meet the guest: Dr. Dustin Oedekoven / dusty-oedekoven-bb0bb7110 is Chief Veterinarian at the National Pork Board, where he leads initiatives to strengthen U.S. swine health through disease prevention, producer collaboration, and the National Swine Health Strategy. With more than 20 years of experience in veterinary public health and regulatory animal health, his work focuses on protecting the U.S. herd from endemic and foreign animal diseases. Listen to Dr. Dustin Oedekoven on The Swine it Podcast Show, available on all major platforms.