JSPCA FELINE IMMUNODEFICIENCY VIRUS (FIV) FACT SHEET

Background

Feline Immunodeficiency Virus (FIV) is a 'cat specific' virus and there is no present evidence to indicate that FIV can infect man.  The virus is relatively common amongst stray and free-ranging cats and once infected, the virus will persist throughout the cat’s life.  Despite having the virus, many cats can remain in good health, but because the virus causes an immunodeficiency, disease problems can arise over a period of time in infected cats.  (Immunodeficiency is a failure of the immune response, leaving the animal susceptible to infections.) 

The clinical problems associated with FIV infection are relatively non-specific and in most cases, clinical disease is due to problems associated with the immunodeficiency that the virus eventually creates.  Generally, indication of an immunodeficiency may be multiple persistent clinical problems or recurrent bouts of disease, common signs of which include lethargy, loss of appetite, a sore mouth, sickness and diarrhoea, conjunctivitis and sneezing.  Cats with FIV also have an increased risk of developing tumours and are more susceptible to other infectious agents that would be of little consequence to healthy cats.

How is FIV spread?

FIV is shed in the saliva, so bite wounds are considered to be the main mode of transmission.   Hence, entire males carry a higher risk of infection and their free-living lifestyle will assist with the spread of the virus.  Ingestion of saliva from an infected cat is also an important way that FIV may be spread amongst the cat population, for example through the sharing of food and water bowls between an infected cat and a healthy cat.  Blood transfusions can facilitate transmission of the virus.

Testing 

The diagnosis of FIV is usually made by your veterinary surgeon by taking a blood sample and performing a test that looks for the presence of circulating anti-FIV antibodies.  There are several FIV testing systems available, including tests that can be performed at the veterinary practice and more specialised tests that are performed at specific laboratories.  Tests that enable simultaneous testing for both FIV and FeLV (Feline Leukaemia Virus) are commonly used within veterinary practices.  Once a cat has been reliably confirmed positive for FIV, the cat will remain so for life.

Outlook for infected cats

The outlook for cats that already show severe, chronic, multiple signs of disease is poor.  However, if clinical signs have developed recently and are not severe, there is a reasonable chance of improvement with supportive treatment, which can be maintained for some time.  Supportive therapy usually consists of antibiotics and antiviral therapy.  Some FIV positive cats that have shown no clinical signs may remain healthy for long periods of time.

Vaccination

There is currently no licensed vaccine for FIV in the United Kingdom or the Channel Islands.  Healthy FIV-infected cats should continue to be vaccinated against other infectious diseases.

Responsibilities of the FIV positive cat owner

The cat infected with FIV poses a risk to other cats so in order to prevent it from transmitting the virus to other cats it should be kept away from others and not allowed to roam freely outdoors.  Isolating healthy FIV infected cats can be beneficial in protecting them against exposure to other feline infectious agents.

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Jersey Society for the Prevention of Cruelty to Animals (Inc.)

Founded 1868 – Incorporated 1936

89 St Saviour’s Road, St Helier, Jersey JE2 4GJ

Tel: 01534 724331          Fax: 01534 871797

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