Feline Infectious Peritonitis
The subject of FIP can be very expressive so it is best you read the information direct from a qualified vet, so I have included a link to abcdcatsvets.org below.
What is feline infectious peritonitis (FIP)?
1. FIP is a fatal disease in cats caused by feline coronavirus (FCoV). New drugs show promise
for effective treatment but are not yet licensed.
2. FCoV infection is ubiquitous in multi-cat environments, however only a small proportion of
FCoV-infected cats develop FIP.
3. FIP is caused by FCoV variants which arise in the individual cat by mutation(s) and replicate to high concentrations in monocytes/macrophages. The FCoV variant type, viral load and the cat’s immune response all likely play a role in determining whether FIP develops following FCoV infection.
Risk factors for FIP include:
⦁ Young age (>50% of cases are cats <2 years old)
⦁ Stress (e.g. adoption, neutering, boarding)
⦁ Cats living close together in multi-cat households.
For information on transmission and infection from the experts follow the link provided, this will take you to a fact sheet that explains in more detail abcdcatsvets