Companion Animal Welfare

Cat FHV Herpesvirus Long-Term Management

Feline herpesvirus (FHV-1) establishes lifelong latent infection in cats, causing recurrent eye and respiratory disease that requires long-term management to minimise welfare impact.

Key Facts

Virtually all cats are exposed to FHV-1, with most exposed as kittens
Latent virus reactivates during stress, causing recurrent ocular and nasal discharge
L-lysine supplementation was historically recommended but evidence of efficacy is limited
Antiviral eye drops (idoxuridine, cidofovir) are effective for recurrent corneal ulcers
Stress management and immune support through nutrition reduce recurrence frequency

Welfare Considerations

FHV-1 causes recurrent bouts of eye pain, nasal congestion and ulceration throughout a cat's life. Cats with severe recurrent disease experience significant welfare impact from chronic discomfort, reduced vision and breathing difficulty. Management focuses on reducing stress triggers, prompt treatment of recurrences, and antiviral therapy when corneal involvement occurs. Stress reduction is the most important long-term welfare intervention.

What You Can Do

Minimise stress triggers for cats with recurrent herpesvirus disease
Seek prompt veterinary treatment at the first sign of recurrence
Discuss antiviral eye drops with your vet for cats with recurrent corneal ulcers