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Cats + Infectious Diseases

  • Fleas and ticks can be found worldwide and can live in many climate zones. Prevention is key to avoid infestations and to prevent disease.

  • Cat scratch disease (CSD) is caused by the bacteria Bartonella that is transmitted by cat fleas and other biting insects. Cats act as reservoirs for the bacteria. Humans are exposed to the bacteria through flea feces that contaminate skin lesions or eyes. Signs include fever, lethargy, enlarged lymph nodes, and lesions on the eye and skin. The disease is usually self-limiting; however, some people will require antibiotics, especially if they are immunocompromised. Tests are available for diagnosis in humans as well as in cats. The most important ways you can prevent CSD include strict flea control, good hygiene, keeping your cat indoors, and keeping your cat's nails trimmed.

  • Selamectin + sarolaner is used topically on the skin to treat various parasites, both on and off-label, and prevent heartworm in cats. Side effects are rare but may include hair loss at the application site, gastrointestinal upset, skin reactions, or neurologic signs. It should be used with caution in sick or underweight cats. If a negative reaction occurs, please call your veterinary office.

  • Tapeworms are parasites that infect the gastrointestinal tract of cats, other animals, and humans. Several types of tapeworms are known to infect pets, but the most common species observed in cats is Dipylidium caninum, which is transmitted through fleas. Risk factors, clinical signs, treatment, and prevention are explained in this handout. Other, less common types of tapeworms that affect cats and humans are also covered.

  • Tularemia is an infection of the bacteria Francisella tularensis and is most common in rabbits and rodents. Infection in cats occurs from ingestion of an infected animal, drinking contaminated water, or getting bitten by a blood-sucking insect. Clinical signs include enlarged lymph nodes and draining abscesses. Treatment includes antibiotics, surgical removal of any draining abscesses, and any other supportive care warranted by the cat's condition. Tularemia is a reportable zoonotic disease.

  • Adding a new kitten to your family is a lot of fun, but it is also a big responsibility. This handout reviews basic kitten care, including vaccinations, internal and external parasites, nutrition, and nail care. It also reviews the importance of early spay/neuter and microchip identification.

  • This handout outlines common internal parasites in cats and what you can do to prevent or treat infection. Included are parasites of the gastrointestinal tract (roundworms, hookworms, and tapeworms), as well as parasites of the circulatory system (heartworms).

  • A zoonosis is a disease or infection that can be transmitted from animals to humans. Although cats only pose a mild risk of causing disease in humans, those with immunosuppressive conditions such as HIV or those receiving chemotherapy are at higher risk of becoming ill from these infections. The most common and significant infections that humans can get from their cats include rabies, cat scratch disease, toxoplasmosis, and ringworm. Feline leukemia virus (FeLV) and feline immunodeficiency virus (FIV) are not zoonotic. Hygiene plays an important role in preventing the spread of these diseases, as well as preventive medicine for your cat, including regular deworming and external parasite preventives. Keep your cat indoors to minimize exposure to zoonotic diseases.

  • The American Animal Hospital Association and American Veterinary Medical Association have established guidelines to standardize preventive health care for cats, helping them to live longer, healthier lives. This handout provides an overview of the recommendations within these guidelines and why they are so important.

  • Feline hemotrophic mycoplasmosis (FHM) is caused by a microscopic bacterial parasite that attaches itself to the surface of the cat's red blood cells. The infected blood cells may break down, or they may be treated as “foreign” by the cat's immune system and be destroyed. Anemia occurs if enough red blood cells are infected and destroyed. The test of choice is called a PCR assay. Broad-spectrum antibiotics such as doxycycline, enrofloxacin, or marbofloxacin are used to treat M.Haemofelis infections. Transmission is not fully understood.