Feline Infectious Peritonitis: Welfare Advances Through Treatment

Feline infectious peritonitis was once a universally fatal disease, but antiviral treatments now offer genuine cure prospects, transforming the welfare landscape for affected cats.

Key Facts

FIP is caused by a mutated form of feline coronavirus and affects around 1 in 5000 cats
Until 2019, FIP was considered virtually 100% fatal once clinical signs developed
GS-441524, a nucleoside analogue, achieved cure rates above 80% in clinical trials
Treatment requires 84 or more days of daily injections and is expensive
Wet FIP with pleural or abdominal effusion has historically been the most rapidly fatal form

Welfare Considerations

Before effective antiviral treatment, cats diagnosed with FIP typically experienced rapidly progressive suffering including abdominal distension, fever, weight loss, neurological signs, and ocular involvement before euthanasia became necessary. The welfare transformation offered by GS-441524 and related compounds is profound: cats that would previously have died within weeks can now recover fully and resume normal lives. However, cost barriers mean that many cats with FIP are still euthanased without antiviral treatment. Access to effective FIP treatment represents a genuine welfare advance that should be universally accessible.

What You Can Do

Ensure pet insurance covers FIP treatment or save specifically for emergency veterinary costs
Know the signs of FIP including lethargy, fever, abdominal swelling, and eye changes
Seek specialist veterinary opinion immediately if FIP is suspected
Support campaigns for affordable access to FIP antiviral treatments
Learn about cat coronavirus management to reduce mutation risk in multi-cat households