Skip to Main Content

Symptoms of Parvovirus in Cats

There's nothing scarier for a pet parent than when their cat is sick. It's even scarier when it's a young kitten that's sick, and then it turns out, that kitten has contracted the life-threatening parvovirus. Our Westfield vets share facts about parvo and how you can keep your cat safe.

What is parvovirus in cats?

Feline parvovirus attacks the cells in your cat's intestines, which causes diarrhea, vomiting, and difficulty eating and drinking. It also attacks the bone marrow, causing shortages of red blood cells, white blood cells, and platelets.

This condition is the most common and severe in kittens that are three to five months old.

At birth, kittens are protected because of the antibodies in their mother's milk, but by the time they reach four to 12 weeks old, this protection begins to fade. It is at this gap between when the mother's antibodies are fading, and before vaccinations have begun, that the kitten is the most vulnerable.

Parvovirus, also referred to as parvo, is widespread in most environments and nearly every cat will be exposed to it during their life. Apart from young kittens, sick or unvaccinated cats are most likely to contract this disease. 

Parvovirus in cats is also referred to as feline distemper and feline panleukopenia.

How Parvovirus Attacks Your Cat's Body

Parvo is considered a disease of the stomach and small intestines. Once there, the virus begins destroying the cat's gut barrier by attacking healthy cells and blocking the absorption of essential nutrients.

In kittens, parvo also attacks the bone marrow and lymphopoietic tissues, which play essential roles in your cat's immune system. After it's done there, the virus will go after the heart.

Why are young cats susceptible to parvo?

If the mother is fully vaccinated against parvo, her kittens will inherit antibodies that will protect them against the virus for the first few weeks of their lives. 

However, as the kittens begin to wean, their immune systems weaken and the young kittens become susceptible to the disease.

Vets urge pet parents to begin vaccinating their kittens against parvo starting at six weeks of age when the kitten begins to wean and the antibodies from the mother are no longer available to protect them. It is during this gap between weaning and the beginning of vaccinations that a kitten is most likely to catch the disease.

It isn't until the young cat has received all three vaccinations that they will be fully protected against the disease. 

Symptoms of Parvovirus in Cats

It is essential to understand that once your kitten begins showing symptoms they are already very ill. Here are the symptoms you need to look out for.

  • Bloody diarrhea
  • Weakness
  • Watery nasal discharge
  • Fever in the early stage followed by low body temperature
  • Lethargy and depression
  • Inability to eat
  • Weight loss
  • Vomiting or frothing at the mouth
  • Dehydration

Not only are kittens super fragile, and this disease can progress very quickly and lead to death if not caught right away.

If you see the slightest sign of any of these symptoms, contact your nearest emergency vet immediately.

Treatment for Parvovirus in Cats & Kittens

There is no cure for parvo in kittens, however, your vet will offer supportive treatments to address symptoms such as vomiting and diarrhea. It is essential that your kitten gets adequate hydration and nutrition in order to attempt a recovery from parvovirus. Sadly, kittens have a high mortality rate after contracting this disease.

Since secondary infections are common in kittens with parvovirus (due to their weakened immune systems), your vet will be sure to monitor your kitten's ongoing condition and may prescribe antibiotics to help combat any bacterial infections that may begin to develop.

If your four-legged friend is being treated by a veterinarian and survives the first four days after symptoms appear, there is a good chance that your kitten will recover from the disease.

Preventing Parvovirus in Cats

Never allow your kitten to spend time around cats that have not been fully vaccinated against parvovirus. Talk to your vet about how best to protect your new feline family member.

Be sure to follow your vet's advice and have your kitten vaccinated against parvo, rabies, and other potentially serious conditions based on a kitten vaccination schedule for your area.

The Prognosis for Cats With Parvo

Feline parvo used to be a leading cause of cat death. Thanks to the preventive vaccine, this is no longer the case. However, once your cat gets parvo, survival rates are grim.

Adult cats who get parvo have a better chance of surviving than kittens. Additionally, cats who receive veterinary care for their parvo have a better chance of surviving than those who do not. Overall, up to 90 percent of cats who get parvo and are not treated will die.

We strongly urge every pet owner to get their kittens and cats vaccinated and follow up with booster shots for the entirety of their cat's life. Preventive measures always outweigh the cost and worry associated with treatment once your cat is already deathly ill. Save them from the discomfort and high mortality rates associated with parvovirus.

Note: The advice provided in this post is intended for informational purposes and does not constitute medical advice regarding pets. For an accurate diagnosis of your pet's condition, please make an appointment with your vet.

If your cat is showing signs of the deadly parvovirus, contact our Westfield emergency vets today to get them the urgent care they need.

Welcoming New Patients, Westfield Vet

Now Welcoming New Patients

Looking for a vet in Westfield? Our vets at Westfield Animal Hospital are now accepting new patients! Our friendly and welcoming vets love providing cats, dogs, and exotic pets with high-quality veterinary care. Contact us today to schedule an appointment.

Contact Us

Contact (908) 233-6030