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Small Mammals + Infectious Diseases

  • COVID-19 is a viral respiratory disease of humans that was first discovered in late 2019. The illness is caused by the virus SARS-CoV-2, which is a new coronavirus that has not previously been identified in humans. Certain animals can be infected by the COVID-19 virus, but it appears to be infrequent. Dogs and cats seldom show severe clinical illness if infected with COVID-19.

  • Cheyletiellosis in rabbits is a condition caused by the common rabbit mite, Cheyletiella parasitovorax. This mite’s effects are sometimes called "walking dandruff" because they are large, whitish mites that crawl across the skin and hair of a rabbit and cause excessive flaky skin. Other clinical signs of cheyletiellosis include itching, scratching, and hair/fur loss. This species of mites can live in the environment for a short time and affect people and other animals, so it is important to follow your veterinarian's recommendations for treating the environment and all pets in the household.

  • SARS-CoV-2 is a new type of coronavirus that has not previously been identified. This virus is not the same coronavirus that can cause the common cold in humans, nor is it the same as canine coronavirus (CCoV). At this time, there is no evidence that any animal or pet can infect humans with the new coronavirus. Because this is a new virus and information is still being collected, as a precaution, restrict contact with your pets if you are diagnosed with COVID-19. Currently, a vaccine for this new SARS-CoV-2 coronavirus is not available.

  • Encephalitozoonsis is a parasitic infection that can affect the kidneys, eyes, and nervous systems of rabbits. Many infected rabbits do not develop clinical signs until they are older or if they become stressed or immunocompromised. Common signs that may develop include heavy white plaques/growths inside one or both eyes, head tilt, eye twitching, and tremors or seizures. Treatments are available, though not all rabbits respond.

  • There are four major infectious diseases seen in pet rabbits: myxomatosis, rabbit hemorrhagic disease (RHD), encephalitozoonosis, and pasteurellosis. This handout discusses the causes, signs, and treatments for these diseases. Be sure to have your rabbit checked annually by a veterinarian to keep them as healthy as possible and minimize problems.

  • Rabbit hemorrhagic disease virus (RHDV) is a fatal calicivirus that affects only rabbits. It can be transmitted by direct contact with a diseased rabbit or from feces, urine, or hair from a diseased or dead rabbit. There is no known treatment, but an American-made vaccine is available in the US. Europe has had a vaccine available for years.

  • Rabbit syphilis is a sexually transmitted disease caused by a spirochete organism called Treponema cuniculi. Infected rabbits will develop sores that are confined to the mucocutaneous junctions, such as the external genitals, anus, lips, nostrils, and eyelids. Treatment involves two to three weekly penicillin injections. Humans cannot contract this disease from rabbits.

  • **This article has been specifically written for pet sitters and how they can reduce their exposure to COVID-19.** COVID-19 is a new respiratory disease in humans, initially discovered late in 2019. Although all coronaviruses are related, they are not all the same virus. As a pet sitter, it is important to limit direct contact with your clients. People can shed the virus without showing any symptoms of disease, so it is important to practice social distancing even with clients who appear healthy. It is also important to limit your contact with potentially contaminated items in your clients’ homes, whether they are at home or not. The most important things you can do to minimize your risk of infection, and minimize the risk of transferring infection to your clients, is to be cautious when interacting with clients and when touching anything that could be contaminated. Communicate with your clients regularly during this pandemic. Having information about your clients’ health can help you avoid taking unnecessary risks. Finally, if you develop any signs of COVID-19, including cough, fever, and/or shortness of breath, it is important that you stay home from work.