Cat Feline Infectious Peritonitis: Welfare and Treatment

FIP, caused by a mutated feline coronavirus, was once invariably fatal but new antiviral treatments are dramatically improving outcomes.

Key Facts

FIP results when feline enteric coronavirus mutates to a more virulent systemic form
Wet FIP causes fluid accumulation in the abdomen or chest; dry FIP causes granulomatous lesions
Previously fatal in virtually all cases, antivirals GS-441524 and remdesivir now achieve remission in over 85% of cats
Treatment requires 84 days of daily injections or oral medication
Young cats and cats in multi-cat environments have higher risk of developing FIP
Testing includes protein analysis of effusions, PCR, and immunostaining for definitive diagnosis
Treatment access has improved with licensed oral formulations now available in many countries

Welfare Considerations

FIP causes significant suffering through the accumulation of fluid (causing breathing difficulty and abdominal pain), fever, weight loss, and progressive organ failure. The transformation from universally fatal to largely treatable is one of the most significant recent advances in veterinary medicine for feline welfare. Access to affordable treatment remains a barrier in some regions, creating welfare inequities based on economic circumstances.

What You Can Do

Seek specialist evaluation immediately if your cat shows signs of FIP - early treatment improves outcomes
Contact FIP Warriors and similar organizations for guidance on accessing treatment
Advocate for affordable access to GS-441524 and licensed antiviral treatments worldwide
Support veterinary research into FIP prevention including coronavirus management in multi-cat environments
Minimize stress and exposure to new cats in multi-cat households to reduce coronavirus transmission
Donate to organizations funding FIP treatment research and access programs