Panleucopaenia

What is Feline Panleucopaenia?

Feline Panleukopaenia is a severe and potentially fatal viral disease, especially dangerous for young cats and kittens. The virus is closely related to canine parvovirus, though dog strains rarely cause illness in cats. In contrast, panleukopaenia can have devastating consequences if contracted.

Who Is at Risk?

All unvaccinated cats are susceptible, but young kittens are particularly vulnerable.

How Feline Panleukopaenia Is Spread

Infected cats shed the virus in urine and faeces for up to six weeks. The virus can survive in the environment for months or even years and is resistant to many common disinfectants.

  • Environmental contact is the most common way cats become infected.

  • Pregnant queens can pass the virus to their unborn kittens via the placenta.

Signs and Symptoms

Symptoms can develop rapidly and may include:

  • Severe vomiting

  • Loss of appetite (anorexia)

  • Fever

In some cases, kittens may deteriorate so quickly that death occurs before any symptoms are noticed, a condition often referred to as fading kitten syndrome.

Other signs may include:

  • Confusion with poisoning or foreign body ingestion due to sudden illness

  • Severe dehydration from reduced food and water intake

Older cats often experience milder symptoms. Pregnant queens may show no illness, but their unborn kittens can suffer in-utero infection, leading to death or neurological damage.

Treatment

Treatment is primarily supportive, often including:

  • Intravenous fluids to combat dehydration

  • Antibiotics to prevent secondary infections

Without intensive care, many cats will not survive the disease.

Recovery and Prognosis

Cats that survive beyond five days without complications have a better chance of recovery, though full recovery may take several weeks. Once recovered, cats are highly unlikely to contract the disease again.

Prevention

Vaccination is the best protection against Feline Panleukopaenia:

  • Included in most UK cat vaccines

  • Regular boosters are required to maintain immunity

  • Especially important for queens before breeding

One vaccine available in the UK also cross-protects against canine parvovirus strains, preventing cats from shedding the virus and potentially infecting dogs.