Canine Parvovirus

By: Labiba Khandaker

A highly contagious and potentially fatal viral disease - but one that's almost entirely preventable with the right care. Understanding canine parvovirus. Canine parvovirus (CPV) is a viral illness that attacks a dog's digestive system and, in some cases, the heart. The virus attacks white blood cells and the gastrointestinal tract of dogs (1). It spreads easily through contact with the feces of an infected dog — even indirectly, through soil,

shoes, or contaminated surfaces. The virus is remarkably tough and can survive in the

environment for months to years. (1,2)

Who is most at risk? (1)

● Puppies 6-20 weeks

● Unvaccinated or incompletely vaccinated dogs

● And specific breeds such as

● Rottweilers

● Doberman pinschers

● Bull terrier breeds

● German shepherds

● English springer spaniels

Symptoms to watch for (1,2)

● Fever or low body temperature

● Vomiting

● Lethargy and weakness

● Loss of appetite

● Drooling (due to nausea)

● abdominal pain and bloating

● severe, often bloody diarrhea

How is it treated? (1,2)

There is no antiviral drug that kills parvovirus. Treatment is supportive — meaning veterinarians focus on keeping the dog alive while the immune system fights the infection. This typically involves IV fluids to combat dehydration, anti-nausea medications, antibiotics to prevent secondary bacterial infection, and nutritional support. Hospitalization is usually required for several days. With prompt, aggressive care, survival rates can reach 70–90%.

Preventative Measures: (2)

● Vaccinate — the core DHPP vaccine is highly effective against parvo

● Complete the full puppy series (typically at 8, 12, and 16 weeks)

● Keep unvaccinated puppies away from dog parks and unknown dogs

● Disinfect with bleach solution — it is one of the few agents that kills the virus

● Booster vaccines are needed in adulthood — follow your vet's schedule

● Until the initial vaccination series is complete, use caution when bringing puppies to

places where dogs gather. This includes pet shops, parks, puppy and obedience classes,

doggy day cares, kennels, and groomers.

● Avoid contact with infected dogs

● Keep your dog away from other dogs when sick, including other dogs within your home

● Keep your dog away from other docs feces

References

Canine Parvovirus - Dexter & Evie Vet Clinic + Urgent Care.” Dexter & Evie Vet Clinic +

Urgent Care, 20 July 2023, dexterandevievet.com/canine-parvovirus/.

American Veterinary Medical Association. “Canine Parvovirus.” American Veterinary Medical

Association, www.avma.org/resources-tools/pet-owners/petcare/canine-parvovirus.

Malmanger, Ellen. “Parvo in Dogs: What to Know about Canine Parvovirus.” Www.petmd.com, 30 Jan. 2025, www.petmd.com/dog/conditions/infectious-parasitic/parvoin-dogs.