Cat Welfare: Feline Infectious Peritonitis

Feline infectious peritonitis (FIP) was once a fatal diagnosis. New antiviral treatments have transformed welfare outcomes for affected cats.

Key Facts

FIP is caused by a mutation of feline coronavirus and primarily affects young cats under 2 years
FIP was historically fatal in virtually all cases - a diagnosis meant imminent euthanasia
Antiviral drugs (GS-441524 and molnupiravir) have achieved remission in over 90% of treated cats
Treatment typically costs £2,000-£5,000 for a full course in the UK, creating access inequality
FIP primarily affects cats in multi-cat environments (rescues, catteries) where coronavirus circulates
Cats from high-density multi-cat households should be monitored closely for early FIP signs

Welfare Considerations

FIP represents one of the most striking recent welfare advances in companion animal medicine. A disease that was invariably fatal as recently as 2015 is now treatable with antiviral therapy that achieves sustained remission in the majority of cases. The welfare transformation for individual cats is enormous - from certain death to full recovery. However, the high treatment cost creates a significant welfare inequality: cats in wealthier households receive life-saving treatment while cats in lower-income homes are more likely to be euthanised. Advocacy for affordable antiviral access, pet insurance awareness, and charitable support for treatment costs are important welfare interventions in this new era of FIP management.

What You Can Do

Insure cats from kittenhood to make FIP treatment financially accessible
If FIP is suspected, seek urgent veterinary assessment - early treatment gives the best outcomes
Support FIP-specific charities that provide treatment grants for low-income cat owners
Share awareness of modern FIP treatment options - many owners still believe it is untreatable
Advocate for veterinary affordability policies that ensure life-saving treatments are accessible regardless of income