FIP Rarely Travels Alone: What Viral Coinfections and Gingivostomatitis Mean for Today’s FIP Cats

Feline infectious peritonitis has undergone a dramatic rebrand in recent years. Once considered uniformly fatal, FIP is now a treatable disease thanks to antiviral therapy with GS-441524. As survival improves, veterinary professionals are increasingly faced with a new reality. Many of these cats are not dealing with a single pathogen, but with multiple viral passengers that may influence comfort, inflammation, and long-term management. Among the most clinically frustrating complications is feline chronic gingivostomatitis, a painful condition that can linger even after FIP is controlled.