What is FIP?

Feline Infectious Peritonitis (FIP) is a serious viral disease and is almost always fatal. A specific virus of the Corona group is known to be the direct cause of FIP.

The exact method of infection is still a mystery. The FIP virus is a mutation of another virus called the feline enteric coronavirus (FECV). The FECV is quite common among cats but usually causes no more than a mild respiratory infection. Only cats that get the FIP mutation will have the fatal FIP.

The FIP virus attacks the cat's white blood cells and damages the capillary blood vessels throughout the body. Different organs in the body may be involved, causing various physiological phenomena.

Who's at Risk?

Why some cats develop FIP and others do not is still unclear. Most affected cats are under the age of five or over the age of eleven and many come from multi-cat households. A major factor identified during the past few years is genetics - it appears that some cats are genetically more susceptible to FIP.

These findings have caused alarm among breeders because it implies that some lines are more likely to produce FIP sensitive cats. However, due to the spontaneuous enigmatic nature of this disease, sporadic cases of FIP over the years, do not necessarily mean that there is a genetic fault with a cattery's breeding stock.

Symptoms of FIP

Since the virus affects the blood vessels and harms different parts of the body, the symptoms may vary between cats. There are two forms of FIP in cats, effusive (wet), and non-effusive (dry). Both are invariably fatal.

In the effusive or wet form, the damage to the blood vessels causes fluid accumulation in tissues and body spaces, especially in the chest and abdomen. Abdominal swelling and labored breathing are among the signs of wet FIP. Other symptoms include fever, depression, dehydration, anemia, vomiting, diarrhea, and jaundice.

The non-effusive or dry form of FIP has similar symptoms, except there is no accumulation of fluids in the abdomen or chest. Surgical exploration often reveals mucus on the surface of internal organs, however.

Since FIP can be difficult to diagnose, its identification is often based on a combination of several lab tests. In some cases, only a biopsy or surgical exploration can verify if a cat is infected with FIP.

Treatment of FIP

Unfortunately, there is no cure for FIP. Life expectancy for cats with FIP is usually a few weeks. Medications can be used to make the cat more comfortable and may help to slightly extend the cat's life.

Prevention of FIP

It is hard to tell which cat will develop FIP, and preventive measures can never ensure that a certain cat will not become infected.

It is important to keep a cat's immune system functioning well. This means to maintain good nutrition and a low-stress environment. In multiple cat households, cats must not get overcrowded, as this increases stress levels as well as potential virus levels in the environment.

An FIP vaccine is available, but its effectiveness is still under investigation.

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