Feline Infectious Peritonitis (FIP)

Feline Infectious Peritonitis (FIP)
Feline Infectious Peritonitis (FIP) is a serious viral disease in cats caused by the Feline Coronavirus (FCoV). While many cats carry the coronavirus without showing any severe symptoms (typically only mild diarrhea), in some cases, the virus mutates within the cat's body, leading to the development of FIP, which is often fatal if left untreated.

Types of FIP
FIP generally manifests in two main forms:

Effusive (Wet) FIP:

This is the more common and acute form.
Symptoms: Accumulation of fluid in the abdominal cavity (ascites) or chest cavity (pleural effusion), leading to a distended belly or difficulty breathing. Cats often experience persistent fever, weight loss, and lethargy.
Non-effusive (Dry) FIP:

This form is more chronic and harder to diagnose.
Symptoms: Development of inflammatory lesions (granulomas) in various organs such as the liver, kidneys, eyes, or central nervous system. Symptoms depend on the affected organ, such as neurological signs (seizures, loss of balance) or ocular changes (cloudy eyes).
Transmission
The virus is primarily spread through the fecal-oral route. Cats in multi-cat environments, such as shelters or breeding catteries, are at a higher risk of contracting the Feline Coronavirus, though only a small percentage will actually develop the mutated FIP form.

Diagnosis
Diagnosing FIP can be challenging because its symptoms mimic many other diseases. Veterinarians typically use a combination of:

Physical examination and clinical history.
Blood tests (checking for high protein levels and A:G ratio).
Analysis of abdominal or chest fluid (for the wet form).
PCR testing or specialized staining (Immunohistochemistry) to detect the virus in tissues.
Treatment and Prevention
Historically, FIP was considered 100% fatal. However, modern veterinary medicine has introduced antiviral treatments (such as GS-441524) that have shown high success rates in curing the disease.

Prevention: Maintain good hygiene, minimize stress in cats, and keep litter boxes clean to reduce the spread of the coronavirus.