An official website of the United States government.

The .gov means it’s official.
Federal government websites always use a .gov or .mil domain. Before sharing sensitive information online, make sure you’re on a .gov or .mil site by inspecting your browser’s address (or “location”) bar.

This site is also protected by an SSL (Secure Sockets Layer) certificate that’s been signed by the U.S. government. The https:// means all transmitted data is encrypted — in other words, any information or browsing history that you provide is transmitted securely.

Classical Swine Fever

View all resources
Classic swine fever
Classic swine fever, ARS discoveries are providing vital information to help fight this economically devastating disease, which affects cattle and other cloven-hoofed animals. Photo by Regis Lefebure; USDA, ARS, Image Gallery
Scientific Name: 

Family Flaviviridae, genus Pestivirus (Paton et al. 2000)

Common Name: 

Classical swine fever (CSF), hog cholera

Native To: 

Origin unknown; may be native to the U.S. (Ganges et al. 2020)

Date of U.S. Introduction: 

First reported in Tennessee in 1810; Eradicated in the U.S. in 1978 (Brown and Bevins 2018; Ganges et al. 2020)

Means of Introduction: 

Can be transmitted through contact with infected pigs or consumption of contaminated feed (Ganges et al. 2020)


Highly contagious, viral disease of pigs that is usually fatal. The disease is still present in many countries, so there is a risk that it could become established in this country once again. While classical swine fever does not cause foodborne illness in people, economic losses to pork producers would be severe if the disease were to become established again in this country. (Brown and Bevins 2018)

Current U.S. Distribution: 
Not currently established

Federally Regulated


Iowa State University. Center for Food Security and Public Health.


Google. YouTube; University of Pretoria (South Africa). African Veterinary Information Portal.

Selected Resources

The section below contains highly relevant resources for this species, organized by source. Or, to display all related content view all resources for Classical Swine Fever.


World Organisation for Animal Health.

Federal Government

USDA. APHIS. Veterinary Services.

State and Local Government

California Department of Food and Agriculture.


Iowa State University. Center for Food Security and Public Health.