What is the primary mode of transmission for feline infectious peritonitis?

Feline infectious peritonitis (FIP) is primarily caused by a mutation of the feline coronavirus, which spreads mainly through direct contact with an infected cat's bodily fluids, including saliva, feces, and nasal secretions. Cats can also spread the virus through litter boxes and shared food and water dishes, emphasizing the importance of close contact for transmission.

While airborne transmission and environmental contamination can play a role in certain infectious diseases, they are not the primary transmission routes for FIP. Fleas and ticks are vectors for other diseases in cats but are not involved in the transmission of FIP. Understanding how FIP spreads is crucial for managing and minimizing outbreaks, particularly in multi-cat households or shelters.