Neosporosis is caused by the protozoan parasite Neospora caninum. Neosporosis has been recognized in dogs, cattle, horses, and other animals, but the dog is the definitive host. (A definitive host is an animal that a parasite requires in order to mature normally.) Infection is uncommon but can be acquired by ingesting contaminated food and water, or ingesting infected tissues. It may also be transferred from a mother to a fetus still in the womb (
Melioidosis is a bacterial infection of humans and animals. The disease-causing agent is Burkholderia pseudomallei, which occurs in the soil and water throughout southeast Asia, northern Australia, and the South Pacific. The true boundaries of this organism are unclear, as it may cause sporadic disease and outbreaks in other temperate regions. Melioidosis outbreaks have coincided with heavy rainfall, flooding, major excavations, and disturbances i
Lyme disease, which is caused by Borrelia burgdorferi bacteria and transmitted through the bite of a tick, affects domestic animals (dogs, horses, and possibly cats) and humans. At least 4 known species of ticks can transmit Lyme disease. However, the great majority of Lyme disease transmissions are due to the bite of a very tiny tick commonly called the deer tick, or black-legged tick. The scientific name of the tick involved on the
Leptospirosis is a disease caused by bacteria in the genus Leptospira; there are roughly 21 species, with more than 250 varieties (called serovars) that can cause disease. Because the organisms survive in surface waters (such as swamps, streams, and rivers) for extended periods, the disease is often waterborne. The disease affects virtually all mammals, including people, and has a broad range of effects, from mild, asymptomatic infections to multi
Leishmaniosis is a chronic, severe disease of humans, dogs, and certain other mammals caused by single-celled protozoa of the genus Leishmania. Canine leishmaniosis (also called viscerocutaneous leishmaniosis) is characterized by skin lesions and disease of internal organs.
Infection in dogs is prevalent in Central and South America, the Middle East, Asia, and the Mediterranean region. The disease is found intermittently in No
Infectious canine hepatitis is a worldwide, contagious disease of dogs with signs that vary from a slight fever and congestion of the mucous membranes to severe depression, severe reduction in white blood cells, and deficiency of blood clotting. In recent years, the disease has become uncommon in areas where routine vaccination is used.
Infectious canine hepatitis is caused by a virus, canine adenovirus 1. Consumption of urine, feces, or saliva from infected
Glanders is a contagious, short or longterm, usually fatal disease of horses caused by the bacterium Burkholderia mallei. The disease is characterized by the development of a series of ulcerating nodules. The nodules are most commonly found in the upper respiratory tract, lungs, and skin. People, dogs, cats, and other species are susceptible, but infections in dogs are uncommon. Infections in people are often fatal.
Prevention
Funguses (also called fungi) are parasitic, spore-producing organisms. They obtain their nourishment by absorbing food from the hosts on which they grow. Many species of fungus exist in the environment, but only a very few cause infections. The primary source of most infections is soil. Fungal infections can be acquired by inhalation, ingestion, or through the skin (for example, through a cut or wound).
Some fungal infections can cause disease in otherwise he
Clostridium perfringens is a bacterium that is widely distributed in the soil and the gastrointestinal tract of animals. It has the ability to produce poisonous substances (toxins) outside of the bacterial cell. Inflammation of the intestines (enteritis) and absorption of toxins (known as enterotoxemia) occur when these poisonous substances are released. Five types of Clostridium perfringens have been identified, but only one, Type A,
Canine ehrlichiosis is usually caused by the rickettsia Ehrlichia canis, although other types of Ehrlichia are sometimes involved. (Rickettsiae are a specialized type of bacteria that live only inside other cells.) Carried by ticks, the organism infects a certain type of white blood cell (called monocytes) and causes fever and other signs. A related organism, Ehrlichia ewingi, targe