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Cat Flu: Sneezing and Runny Eyes? It Could Be Cat Herpesvirus (FHV-1)

Updated: 4 days ago

Feline herpesvirus, cat tearing and sneezing

By Dr. Ryan Chuang


Is your cat frequently sneezing or struggling with watery eyes? These are classic signs of Feline Herpesvirus (FHV-1), one of the most prevalent viral infections in the feline world.


1. What is Feline Herpesvirus and What are the Symptoms?

FHV-1 is a primary cause of upper respiratory infections in cats. Most cats were exposed to this virus at kitten stage if they came from pet shop, breeder or shelter. When the virus flares up, common symptoms include:

  • Respiratory Issues: Frequent sneezing and nasal discharge.

  • Ocular Issues: Excessive tearing and eye discharge (conjunctivitis).

  • Severe Cases: Corneal ulcers or oral ulcers may develop.


2. Transmission: A Lifelong Guest

The virus spreads through direct contact between cats or by sharing contaminated items like food bowls, water dishes, and litter boxes.

  • High-Risk Environments: Cats from shelters, pet shops, or multi-cat households are highly likely to be carriers.

  • Latency: Once a cat is infected, the virus remains dormant in their body for life. It "wakes up" and causes symptoms during times of stress or illness.


3. Prevention and Management

  • The Role of Vaccination

The F3/F4 vaccine includes protection against FHV-1. While it may not prevent infection entirely, it significantly reduces the severity of clinical signs. If your cat suffers from frequent flare-ups, consult your vet about optimizing their vaccination schedule.

  • Is Treatment Necessary?

Mild cases in healthy cats may resolve on their own. However, if symptoms persist or bothering the cat, vets may prescribe antiviral medications (such as Famciclovir) to reduce the viral load and speed up recovery.

  • L-Lysine Supplements

While theoretically helpful in inhibiting viral replication, scientific studies on L-Lysine’s effectiveness in preventing relapses are mixed. However, due to its high safety profile, many owners continue to use it as a supportive supplement.


4. FAQs: Can Me or My Family Catch It?

No. Feline Herpesvirus is species-specific. It cannot be transmitted to humans or children; it only affects cats.


(Article by Dr. Ryan Chuang. Reproduction without permission is prohibited; sharing with original attribution is welcomed.)

 
 
 

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