FIP is Treatable

What was once a fatal condition with no treatment options, is now survivable.

What is FIP?

Find out more about this common and highly fatal coronavirus disease in cats.

Get help

View a list of veterinarians who treat FIP in cats and additional resources.

Does my cat have FIP?

Do you suspect that your cat might have FIP? If so check out this information.

What is FIP?

Feline Infectious Peritonitis (FIP) is a common and highly fatal coronavirus (FCov) disease in cats.

FIP is caused by the feline enteric coronavirus (FECV). FECV is similar to coronavirus causing diarrhoea or bronchitis in humans, as well as other animals such as piglets, foals, ferrets, calves and poultry.

In about 10% of cats, mainly kittens, the enteric coronavirus experiences mutations. The corona virus usually attacks the gut lining causing an ooze, however FIP lies dormant and later attacks the lining of the blood vessels (with the wet form manifesting in the abdomen or chest and the dry form becoming evident in the brain and/or eye).

It escapes the cells that line the lower intestine and infects the most basic cell of the immune system, the macrophage. This mutated virus is known as feline infectious peritonitis (FIPV) and initially affects local lymphatic tissues associated with the lower intestine. FIPV infected macrophages then spread the infection to other sites within the abdomen and chest cavities, and sometimes to the eyes and brain.

More detailed information on FECV infection and clinical manifestations of FIPV disease can be found at

Around 90% of affected cats experience diarrhoea which is usually undetected, and then recover. A positive Corona test does not necessarily mean a cat will go on to develop FIP. FIP has high mortality but low morbidity i.e., has a high death rate if not treated, approaching 99%, but is largely not contagious.

What is FIP Cats Australia?

FIPCA are a not for profit association that raises money to help cats suffering from FIP to get treatment.

FIPCA also educates and informs cat owners, breeders and anyone who has anything to do with the health of cats understand FIP. We have all sorts of resourses and help for anyone wanting to know more about FIP in cats and how they can be helped.

We support those owners in Australia who are going through diagnosis of FIP in their cats, helping them by making available lots of information so they can make informed choices about options and treatment. Our mentor program gives them someone that they can talk with and get support from during a very stressful time. Buddy survival bags are also something we organise to help get treatment started.

Learn more about our story and why FIP Cats Austalia started and the legacy Zeke has left here.

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Whats New?

Management of FIP is a rapidly evolving area. In this WebinarLIVE, Jacqui Norris and Sally Coggins will review the range of clinical presentations and advances in diagnosis before discussing the developments in treatment that mean FIP may no longer be considered a fatal illness.

Update on C&T no. 5896: A feline infectious peritonitis (FIP) treatment protocol by David Hughes BSC BVsc Merit (September 2022)

Latest dosage protocols

a few other interesting links:

Alternative treatments for cats with FIP and natural or acquired risistance to GS 441524

vetimmune official website

treatment information intended for veterinary surgeons only

FIPCA socials

FIP Cats Australia Facebook page –


Stories of survival

  • Freddie


    From our President, Angela IrvineThe Story of Freddie, the Abandoned CatEarlier this Freddie ( as he is now known) was left to be euthanased at the vet after a diagnosis of Combo Dry/Ocular FIP. The vet contacted me to see what could be done. He was signed over to me, and I started treatment. This…

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  • Gru


    My journey with FIPCA began shortly before my own collision with this most nasty, insidious illness called FIP..11.19 pm I have Gru sitting on his scratch post looking quite normal.By about 2.30 the next afternoon,it was a cold day in May in Victoria, Australia & Gru like most nakids, takes to the warmth of his…

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  • Bennett


    As a rescue kitty, Bennett and his brother had a real hard start to life.  When they first came into care we lost his brother due to congenital deformity but little Bennett (Benny Bat) was a fighter and grew into a very loving sweet but highly energetic kitten that just loved his people.  All was…

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  • Boda


    The FIP survival story of Boda, a seal mink Sphynx One Wednesday evening at 7.30pm when Boda was 5 months of age I suddenly saw him struggling to breath. When I fed him at 5pm he was fine. I took a video of him and sent it through to my vet. He called me and…

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  • Teddy


    In May 2023, Teddys owner Rhiannon was after help for her 2 year old cat who she had taken to the vet after she had noticed he seemed quite unwell. Teddy had lost weight, wouldn’t eat or drink much water, was lethargic and he was drooling from nausea. After a vet visit they noticed fluid…

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  • Taio


    Taio is cured of FIP ??? She had neural and ocular dry FIP and maybe it was in her lungs as well. She stopped eating and went down to 2.1kg, her eyes were different colours, the eyelid was partially visible and her back legs stopped working completely. At one point it was so hard for…

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  • Curtis


    Curtis’s survival from wet FIP.  On the 17th of February 2021, Curtis, a then 6 month old Oriental Shorthair kitten, was diagnosed with wet FIP. I had returned home from a 3 day trip away to find Curtis with an abnormally swollen abdomen, and sticky like un-clean fur. I immediately took him to the vet,…

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  • Buddy


    Friday the 13th 2019. The day we heard the words we didn’t want to hear. Buddy has dry FIP. Buddy was 3 years old and weighed only 2.9kg and had just been handed a death sentence, or so we thought. He had stopped eating and was too weak to stand. On the Saturday, we were…

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  • Lumos


    Lumos was abandoned in the snow on Christmas Eve and only a few years after finding his forever home, he became immensely ill in 2020. He rapidly lost weight, stopped eating and drinking, ran high fevers, developed abdominal fluid, and after weeks of no answers, he was diagnosed with FIP. It seemed hopeless given the…

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Blog Posts

  • FIP Observation Period.
    So what is observation? The next 84 days after you have completed the treatment is classified as the observation period. During this period it is important to keep an eye on your baby for any signs of a relapse. These can include: 1. Lethargy 2. Not eating 3. Legs are wobbly 4. Eyes may look…
  • Do’s and Dont”s Whilst Treating for FIP
    Whilst there is no proven evidence about the effects of treatments such as flea and worming, vets are generally very cautious about prescribing any medication including flea and worming as the concern is it may or may not stimulate their immune system. This could cause the FIP to reactivate causing it to come out of…
    The most common question we are asked is how much will treatment cost to treat my cat/kitten for 84 days? Unfortunately no one can answer this question as costs depend on so many things: how old is your cat/kitten? how much do they weigh? what type of FIP do they present with? what symptoms do…
    Symptomatic Treatment For owners that choose not to treat their cat/kitten with REM or GS their option is to provide Symptomatic treatment as prescribed by their vet. This normally entails a low to moderate dosage of prednisilone starting at 2 mg/kg orally once a day for two weeks and then reducing to .5/1mg per kg…
  • How do I feed my FIP Baby?
    This is a question asked all the time and can be the difference between success and failure. A cat/kittens body needs a lot of nourishment during the treatment of FIP as there is so much for the body to repair. Without this they cannot beat this disease. I will list the foods that you should…
  • Why Have Pet Health Insurance?
    Treating a cat or kitten with Feline Infectious Peritonitis(FIP) can be very expensive as treatment goes by the weight of the animal. The treatment guidelines are as follows however please remember every cat/ kitten is different as are the types of FIP. Stage one: This is normally the diagnosis of FIP by your normal vet.…