Cat Chronic Upper Respiratory Infection Management

Chronic upper respiratory infections (URI) in cats, often caused by herpesvirus or calicivirus, require ongoing management to maintain quality of life and reduce recurrent suffering.

Key Facts

Feline herpesvirus type 1 and calicivirus cause most chronic feline URI cases
Up to 80% of cats exposed to herpesvirus become lifelong carriers
Stress is a major trigger for URI flare-ups in carrier cats
Symptoms include sneezing, nasal discharge, eye inflammation, and reduced appetite
Lysine supplementation was once recommended but current evidence does not support its efficacy
Antiviral medications like famciclovir can help manage herpesvirus flares
Environmental enrichment and stress reduction are key to minimizing recurrence

Welfare Considerations

Chronic URI causes ongoing discomfort including nasal congestion, eye pain, difficulty breathing, and reduced sense of smell which profoundly affects cats' ability to eat and engage with their environment. Repeated flare-ups during stress mean cats with herpesvirus carriers spend significant portions of their lives in discomfort. Management focusing on stress reduction, good nutrition, and prompt treatment of flares substantially improves welfare and can reduce the frequency and severity of episodes.

What You Can Do

Minimize stress in your cat's environment through stable routines and enrichment
Use pheromone diffusers like Feliway to reduce anxiety-triggered flares
Consult your vet about famciclovir during severe herpesvirus outbreaks
Ensure cats with chronic URI eat well - warming food enhances smell
Keep vaccinations current - vaccines reduce severity but not all infection risk
Provide quiet, warm resting areas away from household stress triggers