Medical Library
INF

Feline Upper Respiratory Infection

Contagious

Overview

Feline URI is a common "cat cold" complex caused primarily by Feline Herpesvirus-1 (FVH-1) and Feline Calicivirus (FCV). It causes sneezing, runny eyes, and congestion. While usually mild, it can be severe in kittens or cause chronic issues.

Key / Hallmark Signs

  • Nasal discharge
  • Sneezing
  • Red eyes
  • Mouth ulcers
  • Fever
  • Loss of appetite

Common / Supporting Signs

  • Coughing
  • Lethargy
  • Drooling
  • Thick eye discharge
  • Limping

What to do?

This condition requires veterinary attention.

If your animal shows the Key or Common signs listed, please visit a clinic immediately.

Report Case / Get Help

Medical Details

Transmission

Highly contagious via aerosol droplets (sneezing) and fomites. Stress triggers flare-ups in carrier cats (Herpes latency).

Progression & Stages

Active infection lasts 1-3 weeks. Herpesvirus often goes dormant in the nerves and re-emerges during stress. Calicivirus can cause painful oral ulcers and limping syndrome.

Diagnosis

Diagnosis is generally clinical. PCR panels can identify the specific agent (Herpes, Calici, Chlamydia, Bordetella) if needed for outbreak management.

Treatment Protocols

Mainly nursing care: keeping eyes/nose clean, humidification, and palatable food. Antibiotics are used ONLY for secondary bacterial complications. Famciclovir is an antiviral for severe Herpes.

Prevention

The FVRCP vaccine minimizes severity but does not prevent infection completely. Reducing stress prevents flare-ups.

Prognosis

Good. Most cats recover fully, though many become lifelong latent carriers prone to minor recurrence.

Medical References

  • Merck Veterinary Manual, VCA Hospitals

Medical DisclaimerThis information is for education only and does not replace examination, diagnosis, or treatment by a qualified veterinarian.