Cat Feline Herpesvirus Management and Welfare

Feline herpesvirus type 1 is a lifelong infection causing recurrent upper respiratory disease and eye problems in cats, with welfare management focused on reducing flare frequency and severity.

Key Facts

FHV-1 is endemic in the cat population with up to 97% of cats exposed at some point in their lives
After primary infection, the virus remains latent in nerve ganglia for life and can reactivate during stress
Clinical signs during flares include sneezing, nasal discharge, conjunctivitis, and corneal ulceration
Stress is the primary trigger for reactivation, including rehoming, household changes, and concurrent illness
L-lysine supplementation has inconsistent evidence for reducing recurrences and is no longer routinely recommended
Vaccination against FHV-1 reduces severity of clinical signs but does not prevent infection or latency

Welfare Considerations

FHV-1 imposes chronic welfare burden through recurring episodes of respiratory discomfort, painful eye inflammation, and corneal damage. Cats with severe or frequent recurrences experience significantly reduced quality of life. Stress-triggered flares create a challenging management cycle, as life events that cause stress also worsen disease. Eye complications including corneal scarring and sequestrum formation cause chronic pain. Keeping stress levels low and addressing flares promptly are key welfare management principles.

What You Can Do

Vaccinate cats against FHV-1 as part of standard core vaccination protocols
Minimize stress in cats with a known history of herpesvirus recurrences
Seek veterinary assessment promptly when your cat shows eye cloudiness, squinting, or excessive discharge
Use feline facial pheromone products and environmental enrichment to reduce chronic stress
Discuss antiviral treatment options like famciclovir with your vet for cats with severe or frequent flares