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Classical Swine Fever

Scientific Name

Pestivirus suis (ICTV 2023)

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

Classic swine fever
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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

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Federally Regulated


Selected Resources

The section below contains highly relevant resources for this species, organized by source.

Federal Government
State and Local Government