Many affected animals recover, but the disease leaves them debilitated. It causes severe losses in the production of meat and milk. Johne s disease is caused by the bacteria Mycobacterium paratuberculosis, which is a distant relative to the organism that causes Tuberculosis in humans and animals. Rabies Rabies is a viral disease that affects the nervous system of mammals. In the last stages of the disease, the virus moves from the brain into the salivary glands and saliva.
Rabies is almost always fatal once symptoms occur.
Any mammal can get rabies, including humans, dogs, cats, cows, and horses. Scrapie Scrapie is a fatal, degenerative disease affecting the central nervous system of sheep and goats. Scrapie has had a significant impact on the sheep industry and has caused financial losses to sheep producers across the country. Screwworm Screwworm is the common name of a pest native to the tropical areas of North, South, and Central America that causes extensive damage to domestic livestock and other warm-blooded animals. The larvae of these pests feed on the raw flesh of the host animal.