Feline Immunodeficiency Disease – What is FIV? How To Prevent Disease And How To Treat Immunodeficiency In Cats – FIV

Feline immunodeficiency virus (FIV) is one of the most common and fatal infectious diseases in cats worldwide. FIV attacks the immune systems of sick cats, leaving them vulnerable to many other infections.

FIV is a slowly progressive and highly contagious disease that affects a cat's immune system. It is similar to the Human Immunodeficiency Virus (HIV) and weakens a cat's ability to fight infection and disease. Feline immunodeficiency virus (FIV) is primarily spread through the exchange of bodily fluids, especially when a cat bites another cat deeply.

However, FIV is typically not spread through normal cat behaviors such as grooming, sharing food and water dishes, or using the same litter box. A cat that tests positive for FIV can coexist with a cat that tests negative, as long as they get along well and don't exhibit aggressive behavior towards each other which could lead to serious biting.

It is possible, but uncommon, for an infected mother cat to transmit FIV to her kittens either before birth or while nursing.

FIV can cause a variety of symptoms in infected cats, including skin infections, eye infections, and breathing problems. In some cases, FIV can cause chronic conditions such as arthritis, and nerve and digestive problems. Unfortunately, once a cat is infected with FIV there is no cure. However, with proper care, FIV-positive cats can live normal, healthy lives for many years.

To prevent the spread of FIV, it is important to keep cats indoors and away from other cats who may be infected with the virus. This will help reduce the risk of a bite wound, the most common way FIV is transmitted. If you have more than one cat, you should separate FIV-positive cats from other cats to prevent the spread of the virus.


If you suspect your cat has been exposed to FIV-infected cats, it is essential to get them tested as soon as possible. There are several FIV tests, including blood, saliva, and feather tests. Your veterinarian will be able to recommend the best testing method for your cat based on their circumstances.

After cats are diagnosed with FIV, it's important to get the right care and treatment to keep them healthy and comfortable. This may include regular veterinary visits, a balanced diet, and medication to help manage symptoms. In some cases, additional support may also be needed, such as special diets, environmental changes, and behavior modification.

It is important to remember that FIV is a slow-growing disease, and many cats with FIV can live normal, healthy lives for many years. With the right care, you can help ensure that your FIV-positive cat stays healthy and happy for as long as possible.

In addition to proper care and treatment, cat owners can take steps to help prevent their cats from becoming infected with FIV. For example, keeping your cat's vaccination schedule up to date is important, as this will help reduce the risk of other diseases that can weaken their immune systems.


Another way to help prevent FIV is to reduce the risk of a bite wound. This can be done by keeping cats indoors, avoiding cat fights, and providing plenty of toys and other forms of environmental enrichment to keep them busy and entertained. If you must take your cat outside, it is important to supervise them closely to make sure they are safe and do not get into fights with other cats.

There is no effective treatment, but supportive care and treatment of signs are important. This includes visiting the veterinarian at least every 6 months, promptly treating secondary infections, providing a balanced diet, controlling parasites, and removing tumors. FIV-infected cats should be spayed or neutered. They should also be kept indoors to minimize exposure to infectious diseases and prevent the spread of the virus to other cats.

In addition to reducing the risk of bite wounds, it is important to provide your cat with a balanced diet that provides all the nutrients needed to maintain a strong and healthy immune system. This may include a special diet for cats with FIV, as well as supplements to help strengthen their immune systems and reduce the risk of secondary infections.

A vaccine for feline immunodeficiency virus is available, but not all vaccinated cats will be protected, so preventing exposure is important, even for vaccinated pets. Vaccination may also have an impact on future feline immunodeficiency test results. You should discuss with your veterinarian whether your cat needs this vaccine.

Although FIV has been called "feline AIDS" because of its similarity to human immunodeficiency virus (HIV), it is important to understand that FIV only infects cats and does not affect people.

When a cat tests positive for Feline Immunodeficiency Virus (FIV) at a veterinary clinic or shelter, euthanasia should not be the automatic outcome unless the cat is already seriously ill or suffering beyond what can be treated. FIV testing should be done with a plan to provide support and treatment for the cat if she tests positive, rather than end her life.

It is also important that no veterinary hospital or shelter prevents an FIV-positive cat from being reunited with its owner or caregiver. Regardless of the test results, people should be allowed to take their cats home. Additionally, healthy community cats undergoing Trap-Neuter-Return (TNR) should not be tested for FIV at all.

Adoptable cats in shelters should only be tested for FIV if they will be placed for adoption regardless of the test results. Shelters can alternatively advise adopters to have their new cat tested for FIV at a veterinary clinic and not test in their facilities at all.

To ensure the welfare of FIV-positive cats, all shelters should implement programs that facilitate finding homes for them. Many shelters already have successful models that can be replicated.

Recommended keeping your cat's environment clean and free of potential sources of infection. Clean out their litter box regularly, provide fresh water and adequate food, and keep your cat's living and sleeping areas free of dirt and debris. By following these simple steps, you can help ensure that your cats stay healthy and happy, even if they are infected with FIV.

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