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The Journey of FIP in Cats: From Hidden Infection to Visible Signs

Feline Infectious Peritonitis (FIP) is a nightmare disease for cats and Pawrents alike.


This illness is caused by a mutation of the FCoV (Feline Coronavirus) virus that lives in your cat’s body.


In fact, FCoV is generally not a dangerous virus and often doesn’t cause any symptoms. However, the real danger begins when this virus mutates into its deadly form.


That’s why, to save your cat from a mutated virus that turns into FIP, Pawrents need to understand how the virus develops, what early signs to look out for, and how to respond appropriately.


Let’s dive into the full explanation that BasmiFIP Philippines has prepared for you!



What Is FIP and How It Develops from FCoV (Feline Coronavirus)?

As mentioned earlier, FIP is not caused by a standalone virus. This nightmare comes as a fatal complication of feline coronavirus (FCoV).


Generally, this virus is not lethal and is very common in cats—especially kittens under the age of two and cats living in densely populated areas.


Cats infected with FCoV often show no signs of illness. Their immune systems can usually fight off the virus without much trouble.


However, if your cat’s immunity is weak and unable to fight back, the virus may be given the opportunity to mutate—and that’s when FIP comes into play.


Just for clarity, FIP itself is not contagious. Only the FCoV virus can be transmitted. Whether or not a cat eventually develops FIP depends on several factors, including age, stress level, and immune response.



Understanding the Timeline: Infection → Mutation → FIP

Tahapan

Perkiraan Waktu

Exposure to FCoV

Common in kittens under two years old or cats in crowded environments

FCoV Incubation Period

A few days to two weeks

FCoV Mutation into FIP

Can occur within weeks to months

Onset of FIP Symptoms

Two weeks to several months after infection

Reports from Cornell University and UC Davis show that most FIP cases appear within 2–6 months after FCoV exposure. However, symptoms may also take up to a year to develop in chronically stressed cats.



Factors That Affect Symptom Onset

The timing of FIP symptoms varies and is influenced by several factors, including age, immune system strength, stress levels, and living conditions. Here's a quick breakdown.


  1. Age

Kittens under two and elderly cats are more prone to FCoV infection. This age group also experiences higher mutation rates of the virus.


  1. Immune System

As we know, the immune system plays a major role in fighting off infections. The weaker your cat’s immune defences, the higher the risk of FCoV mutating into FIP.


  1. Stress Levels

High stress levels can also increase the chance of FCoV mutation. Cats may become stressed due to moving house, vaccination, or post-surgery recovery.


  1. Living Environment

Cats living in crowded, unclean areas or with many other cats are more likely to contract FCoV. These settings also make mutation into FIP more likely.



Early Signs to Watch For

Early FIP symptoms may resemble other illnesses. However, if your cat shows any of these signs, Pawrents should stay alert and consult a vet promptly:

  • Lethargy and inactivity lasting several days.

  • High fever that persists despite antibiotics.

  • Loss of appetite.

  • Diarrhoea.



Signs of End-Stage FIP in Cats

In advanced stages of FIP, cats typically show the following symptoms.

  • Lethargy, weakness, excessive sleepiness, and hiding behaviour.

  • Significant weight loss due to poor appetite or systemic inflammation.

  • Jaundice caused by liver damage, visible in yellowing of the skin, eyes, and gums.

  • Organ failure, often marked by persistent vomiting, reduced awareness, and abnormal urination.



Behavioural Changes in Cats with End-Stage FIP

Besides physical symptoms, behavioural shifts are common as FIP progresses. You may notice:

  • Hiding due to pain or discomfort.

  • Breathing difficulty, especially in wet FIP cases, caused by fluid build-up in the chest.

  • Restlessness, excessive meowing, and avoidance of touch.

  • Fur becomes damaged, sheds excessively, and loses shine.

  • Inability to walk due to muscle and joint damage.



When to Take Action and Seek Diagnosis

You should take your cat to the vet immediately if:

  • It has a persistent high fever that doesn’t drop even after antipyretics or antibiotics.

  • It experiences sudden weight loss or gains weight despite looking skinny.

  • It shows no interest in food, regardless of changes in meals.

  • It appears lethargic and far less active than usual for several days.

  • It has been in contact with a cat known to be infected with FCoV or diagnosed with FIP.


Diagnosing FIP requires further testing such as blood analysis, fluid sampling, and sometimes a biopsy. Because FIP symptoms are similar to those of other diseases, early diagnosis is critical.



Conclusion: Early Detection Saves Lives

FIP is indeed a frightening disease, but with the right knowledge, cat owners can become more aware of its early signs. If your cat is diagnosed with FIP, start treatment immediately using GS-441524—a drug that has saved thousands of lives.


However, before starting treatment, make sure to consult with BasmiFIP Philippines via Viber so your cat gets the right care and correct dosage.

 
 
 

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