Early detection, advanced traceability vital if ASF hits US

Iowa State University Veterinary Diagnostic Laboratory director shares concerns about African swine fever with members of Congress.

July 17, 2025

White and brown pigs crowded together around a yellow feeding trough

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African swine fever (ASF) has yet to be confirmed in any U.S. swine herds, but if it ever is, early detection will be “absolutely paramount” to controlling its spread, said Dr. Rodger Main, director of the Iowa State University Veterinary Diagnostic Laboratory.

Main was one of four witnesses – all veterinarians – to testify before the U.S. House of Representatives Subcommittee on Livestock, Dairy and Poultry on July 15. The hearing was focused on the role of the National Animal Health Laboratory Network (NAHLN), and combatting animal diseases dominated the discussion.

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