Feline Panleukopenia

Feline Panleukopenia Virus (FPV)
FPV infection results in the disease known as Feline Panleukopenia (FP) among cats and kittens. Like many other viral diseases, FP has no cure, is rapidly fatal and is highly contagious.

Young kittens, sick cats, and unvaccinated animals are the most vulnerable to FP. This disease is most commonly seen in 3 to 5-month-old kittens, with death being more common at this age.

FPV can be found everywhere in the environment, so nearly all cats and kittens become exposed to the virus at some point in their lives. FPV is resistant to many cleaning agents and can persist in an environment for about a year.

Signs and Symptoms of FP
FP symptoms are very generic, which can make confirming the disease tricky. Cats or kittens with FP may show any or all of the following:

  • fever
  • appetite loss
  • diarrhea
  • vomiting

A veterinarian will consider the age of the cat as well as its vaccine status. If you have an unvaccinated cat under a year of age showing any of these signs, FP will be suspected.

Unfortunately, no cure for FP currently exists. Treatment of FP involves keeping the cat alive using supportive care. Supportive care allows the cat’s immune system to fight off the infection and recover. Typically, this means the cat will need to be hospitalized for intravenous (IV) fluid therapy to prevent dehydration. Additionally, the cat will have to receive antibiotic medication through IV to help fight off bacteria that infect the intestines.

While hospitalized, the sick cat will need monitoring of blood sugar plus pain control. Other supportive care a hospitalized cats will receive include medications for controlling pain and nausea. Experienced veterinarians suggest cats with FP have little chance of survival without hospitalization.

One caveat is that even with aggressive treatment, a cat may still not survive FP. Fortunately, FP is easily prevented by means of vaccination.

As mentioned, a vaccine is available to prevent your cat or kitten from falling victim to FP. This same vaccine will also protect against common respiratory viruses (Rhinotracheitis and Calicivirus) so that your feline family member will have less risk of developing other diseases.

Kittens are typically given a series of vaccines at 8, 12, and 16 weeks of age.

After the initial kitten vaccines, adult cats get booster shots once per year to maintain their protection.

Written by: Seneca Animal Hospital


  1. Brooks, Wendy. “Distemper (Panleukopenia) in Cats.” Veterinary Partner. 25 May 2018. Retrieved from: https://veterinarypartner.vin.com/default.aspx?pid=19239&id=4952250
  2. “Feline Panleukopenia.” American Veterinary Medical Association, 2019, Retrieved from www.avma.org/public/PetCare/Pages/feline-panleukopenia.aspx.
  3. Squires, Richard A. “Feline Panleukopenia.” Merck Veterinary Manual. Retrieved from: www.merckvetmanual.com/cat-owners/disorders-affecting-multiple-body-systems-of-cats/feline- panleukopenia?query=panleukopenia%2Bvirus%2Binfection.


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Last updated: December 16, 2020

Dear Clients,

Thank you for choosing Seneca Animal Clinic for your pets' veterinary needs. As we continue to adjust to the "new normal," we have implemented new protocols to keep you and our team safe.

It is still preferred that you stay in your vehicle while we bring your pet in for their appointment. However, as of August 14, 2020, we will be allowing one client to accompany their pet during their visit for urgent, new puppy/kitten, or euthanasia appointments.

Should you choose to come in with your pet, we kindly ask that you comply with the following protocols:

  • Our doors will remain locked. Please call us at 416.494.1109 upon your arrival.
  • Face coverings must be worn to enter the clinic.
  • Physical distance with staff and other clients while inside the building.
  • Use hand santizing station upon entry.
  • Continue the use of credit cards as the preferred payment method.
  • Continue with curbside pickup of food and medication (unless you have used our online store and are having your order delivered directly to your home). To place an order through our online store, visit our website and click on "Online Store".
  • If you wish to wait in your vehicle during the appointment, when you arrive, please remain outside the hospital and use your cell phone to call us. We will take a history of your pet's health and discuss any concerns. A staff member will then meet you outside to bring your pet into the hospital for an examination. The Veterinarian will call you to discuss the recommended treatment plan. After your appointment, a staff member will return your pet to you outside, and take care of any needed medications and payment.

    If you wish to connect with a veterinarian via message, phone or video, visit our website and follow the "Online Consultation" link.


    Have you welcomed a new furry family member to your home? We’d love to meet them! Visit our Must Know New Pet Owner Information page for useful resources and helpful recommendations for new pet owners.


    We are OPEN with the following hours:

    - Monday & Tuesday: 8:00 am - 6:30 pm
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    - Sunday: CLOSED

    Thank you for your patience and understanding and we look forward to seeing you and your furry family members again!

    - Your dedicated team at Seneca Animal Clinic