Cat flu, also known as feline upper respiratory infection, is a common illness that can sometimes become serious. Young, elderly, and unvaccinated cats are particularly at risk. Fortunately, it’s usually treatable with the right care.
In this article, we explain how to recognize, diagnose, and treat cat flu effectively.
Cat Flu (Feline Upper Respiratory Infection)
Cat flu is a common illness in cats that can become serious, especially in young, elderly, or unvaccinated animals. Timely treatment is essential to prevent complications.
Symptoms of Cat Flu
- Fever
- Lethargy
- Loss of appetite
- Frequent sneezing
- Inflamed eye membranes
- Nasal and eye discharge
Causes
Cat flu is caused by infection with the Feline Herpesvirus (FHV) or Feline Calicivirus (FCV):
Feline Calicivirus (FCV)
The milder form, often showing minor nasal discharge and mouth ulcers.
Feline Herpesvirus (FHV)
More severe and potentially dangerous. Recovery takes weeks, and some cats develop chronic rhinitis (persistent nasal inflammation).
Which Cats Are at Risk?
Kittens, seniors, and unvaccinated cats are more vulnerable. Cats with a weakened immune system—due to FIV, FeLV, or other serious conditions—are also at high risk.
Diagnosis and Treatment
The vet will take a sample from the cat’s mouth to test for FHV or FCV. If positive, treatment usually includes antibiotics and supportive medication.
Important during treatment:
- Ensure the cat eats and drinks enough
- Warm up food to increase appetite
- If necessary, use a syringe to feed the cat to avoid dehydration or starvation
Most cats recover well with proper care and attention.
