Lyme disease, which is caused by the bacteria Borrelia burgdorferi and transmitted through the bite of a tick, affects domestic animals 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 species involved on the west coast of the US is
Leptospirosis is a disease caused by bacteria in the genus Leptospira. The disease affects virtually all mammals, including people, and has a broad range of effects, from mild infections with no signs to multiple-organ failure and death. In the past, experts believed that cats were not susceptible to infection, but it is now thought that the bacteria might play a role in longterm kidney disease. As such, cats are unlikely to show the signs of
Leishmaniosis (leishmaniasis) is a longterm, severe, protozoal (parasitic) disease of humans, dogs, and other animals. Dogs serve as the major source of the infection (the "reservoir host"), and cats are rarely infected. The single-celled parasite is transmitted through the bite of a sand fly that has previously bitten an infected animal or person. In people, it is mostly a disease of young children, especially those who are malnourished or have suppressed immune sys
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. Humans, cats, dogs, and other species are susceptible, but infections in cats are uncommon. Infections in humans and cats are often fatal. Glanders is one of th
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 some 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 healthy
Feline panleukopenia (also called feline infectious enteritis or feline distemper) is a highly contagious, often fatal, viral disease of cats. Kittens are affected most severely. Feline panleukopenia virus, the parvovirus that causes this disease, occurs worldwide and can persist for more than a year in the environment unless potent disinfectants are used to inactivate it. The term “panleukopeni
Feline leukemia virus (FeLV) is one of the most important infectious diseases of cats worldwide. Affected cats can develop anemia (a low red blood cell level), cancers, and/or suppression of the immune system. The disease worsens over time and is usually fatal. The virus can infect domestic and wild cats (such as lions). Widespread testing and vaccination efforts have helped to reduce the prevalence of the disease over the past 30 years, and in 2010 approximately 3% of the cats i
Feline infectious peritonitis (often called FIP) is a severe, usually fatal disease caused by a feline coronavirus. Coronaviruses are a family of viruses that chiefly cause respiratory infections. The disease is seen worldwide. Although a large number of cats may be infected with the feline coronavirus, only a few develop the severe form of the disease. It is unknown why only certain cats are affected, but it is thought that a mutation within the virus and an inappropriate immune
Feline immunodeficiency virus (FIV) decreases the function of the immune system of domestic and wild cats. FIV-infected cats are more like to acquire other types of infections that can affect other parts of the body, including the gums, mouth, digestive tract, urinary tract, and skin. They also have an increased risk of developing certain types of blood cancers. The virus is spread from cat to cat through saliva, primarily by bi
Monocytic ehrlichiosis is caused by rickettsia organisms (a specialized type of bacteria that live only inside other cells). In dogs, the disease is usually caused by Ehrlichia canis, although other types of rickettsia are sometimes involved. A similar disease has been occasionally identified in cats in Africa, France, and the United States; however, the exact species causing the infection has not been determined. The disease is transmitted by tic