Texas Animal Health Commission: Johne's Disease
- Factsheets, reference material, and information about the Texas voluntary Johne's Disease program for cattle.
- http://www.tahc.state.tx.us/animal_health/johnes/johnes.shtml

USDA-APHIS-VS: Johne's Disease
- Factsheet with cause, symptoms, prevention strategies, and economic impact.
- http://www.aphis.usda.gov/animal_health/animal_diseases/johnes/index.shtml

Johne's Disease in Sheep
- Good discussion regarding Johne's disease (pronounced yonee's), a bacterial disease of ruminants characterized by wasting and diarrhea.
- http://www.omafra.gov.on.ca/english/livestock/sheep/facts/johnsdis.htm

American Association of Bovine Practitoners: Johne's Disease
- Factsheets on the disease for veterinarians.
- http://www.aabp.org/resources/johnes/johnes_index.asp

Johne's Disease in Sheep and Goats
- Ohio State University Extension factsheet with cause, symptoms, tests, and control.
- http://ohioline.osu.edu/vme-fact/0003.html

Animal Health Australia: Johne's Disease
- Government site with disease information, control programs, databases, and publications.
- http://www.animalhealthaustralia.com.au/programs/jd/jd_home.cfm

Defra: Johne's Disease in Dairy Herds
- UK government site. Factsheets with disease information, control methods, and surveillance information.
- http://www.defra.gov.uk/animalh/diseases/other/johnes.htm

Bovine Paratuberculosis of Beef Cattle
- Article on the disease from Texas A&M University.
- http://animalscience.tamu.edu/main/academics/beef/pub/health/L5288-paratuber.pdf

National Johne's Education Initiative
- Features disease information, objectives, activities, educational materials, and program information.
- http://www.johnesdisease.org/

United States Animal Health Association Committee On Johne's Disease
- Includes yearly reports, resolutions, publications, and member directory.
- http://usaha.org/committees/jd/jd.shtml

Wikipedia: Johne's Disease
- Encyclopedia article on the disease.
- http://en.wikipedia.org/wiki/Johne%27s_Disease

International Association for Paratuberculosis
- Scientific organization for the advancement of scientific progress on Mycobacterium avium subspecies paratuberculosis, related mycobacteria, and related diseases. Includes membership directory, research articles, and publications,
- http://paratuberculosis.org/

Wisconsin Johne's Disease Control Program
- Disease and program information, prevention practices, risk assessment checklists, and testing information.
- http://www.datcp.state.wi.us/ah/agriculture/animals/disease/johnes/index.jsp

Johne's Disease Integrated Program
- Collaboration between universities and the USDA to research the disease. Features disease information, meetings, resources, projects, and news.
- http://www.jdip.org/

The 9th International Colloquium on Paratuberculosis
- Will take place in Tsukuba, Japan from Monday, October 29 through Friday, November 2, 2007.Includes program information, meeting registration, and speaker information.
- http://wwwsoc.nii.ac.jp/jsp3/9ICP/

Johne's Information Center
- University of Wisconsin. Features a FAQ, Johne's epidemiology, diagnosis, pathology, prevention, gallery and graphics, plus brochures, news, and a glossary.
- http://www.johnes.org/

MyCattle: Johne's Disease
- Articles and news about the disease.
- http://www.mycattle.com/health/focus/johnesmain.cfm

University of Missouri Extension: Johne's Disease or Paratuberculosis
- Origin, diagnosis and eradication.
- http://muextension.missouri.edu/xplor/agguides/ansci/g02115.htm

Johne's disease
- Information about ovine (sheep) Johne's disease and its control in New South Wales.
- http://www.agric.nsw.gov.au/reader/ojd