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Cats + Infectious Diseases

  • Vaccinations are important to prevent serious illness in cats. Even cats that spend all their time indoors should be vaccinated. Some viruses can be carried into your home on inanimate objects such as shoes and clothing, therefore infecting your cat without her coming into contact with another animal. Your veterinarian is your most important resource in determining what vaccinations you need to give your cat to keep her protected.

  • This handout is designed to give you an overview of some of the internal parasites that can infect your cat. For more detailed information, refer to our separate information sheets on roundworms, hookworms, whipworms, tapeworms and heartworms.

  • In North America, many parasitic lungworms infect cats. Cats can become infected by swallowing infective stages of parasitic lungworm. The exact means of becoming infected varies according to the life cycle of the particular parasite. Signs can include coughing, heavy breathing, wheezing, sneezing, poor appetite or anorexia, weight loss, fever, enlarged lymph nodes, and ocular or nasal discharge, and may be more prominent in kittens due to their immature immune systems. Although the success rate of treatment depends on the severity of symptoms and the number of parasites present, the prognosis for recovery is generally good.

  • Is Pet Insurance Right for You and Your Pet? The short answer is, “It depends.” The reason to buy pet health insurance is to make sure you can pay for the unexpected emergencies and illnesses that you would otherwise be unable to pay. The insurance can broaden treatment options that may not otherwise be within your financial reach.

  • The Ebola virus is very contagious and is transmitted through blood, body fluids, and tissues, but not through air, water, or food. Ebola affects humans, non-human primates, and is carried by fruit bats. Other species do not appear to be affected, although there has been evidence of exposure to the disease in dogs, cats, and other domestic animals. Domestic animals are not believed to transmit the virus; however, there is a risk that they could transmit body fluids such as saliva on their fur to other humans. Any potential exposure to Ebola should be reported to your veterinarian who will contact the Center for Disease Control (CDC).

  • Feline poxvirus is a relative of the human smallpox virus seen mainly in Asia, Europe, and England. It causes skin lesions around the head, neck, and forelimbs, such as ulcerations, scabs, or abscesses. Cats often recover on their own with no further symptoms unless they are immunocompromised. There is no specific treatment or vaccine. Antibiotics may be used to control secondary infections. The virus can be transmitted to humans but can be significantly reduced by basic hygiene precautions.

  • 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.

  • Rabies is a viral disease that can infect all warm-blooded animals, including cats and people, although some species are somewhat naturally resistant to the disease. When signs of rabies occur, it is an almost invariably fatal disease. Vaccination and post-exposure quarantine are discussed.

  • Ringworm infections in cats are caused by a fungus, not a worm. They can be easily recognized, though definitive testing by fungal culture is recommended. Ringworm is highly contagious and can be spread between animals and from animals to people. The clinical signs, diagnosis, treatment, and risks are explained in this handout.

  • 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.