 
NWDP is involved in disease management, research, disease surveillance,
emergency response, education and outreach for diseases of feral swine.
There are around 4 million feral swine in the United States today. These
animals, weighing in at up to 400 lbs., are non-native to the US and
are considered invasive.
They can be reservoirs of disease and may act as a host to a number
of parasites, leaving the United States domestic swine industry vulnerable
to disease.
Known Feral Swine Diseases and Threats:
• pseudorabies*
• swine brucellosis*
• classical swine fever*
• African swine fever
• bovine tuberculosis
• influenza
• PRRS
• anthrax
• tularemia
• West Nile virus
• E. coli
• salmonella
• trichinosis
• streptococcus
• ticks, fleas, lice
• internal parasites |
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*Since 2006, NWDP has implemented disease monitoring
programs for swine brucellosis, pseudorabies and classical swine fever
across the nation.
In accordance with the Act of 1931; the Rural Development, Agriculture
& Related Agencies Appropriations Act of 1988; and Homeland Security
Presidential Directives 8 & 9; NWDP is committed to protecting domestic
animals, wildlife and humans from a major zoonotic disease outbreak
through an effective surveillance program.
Partners to WS in the surveillance of feral swine diseases:
• Federal Agencies
• State Wildlife Agencies
• Domestic Swine Industry
• Laboratories
• Universities
• Wildlife/Animal Health Organizations
More information on feral swine:
Disease Risks Associated With Increasing Feral Swine Numbers and Distribution in the United States(pdf, 964kb)
Brucellosis and Hog Hunters Brochure (pdf, 1.40mb)
Southestern Cooperative Wildlife
Disease Study (SCWDS)/APHIS National Feral Swine Mapping System
(see a frequently-updated map of US feral swine populations)
APHIS Publication: Feral Swine: Damage and Disease Threats (pdf, 184kb)
*Surveillance manuals available upon request
Project Manager:
Tom DeLiberto
Thomas.J.DeLiberto@aphis.usda.gov
(970) 266-6088
USDA/APHIS/WS
4101 Laporte Ave
Fort Collins, CO 80521
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