Canine parvovirus is a highly contagious virus that can affect all dogs, but unvaccinated dogs and puppies younger than four months old are the most at risk.
But older dogs are much less likely to get parvo and cases are unusual. If an older dog does get parvo, it's often a mild case because your older dog has built up a stronger immune system.
Parvovirus, commonly known as “parvo,” is a contagious virus that can be very serious and even fatal in dogs. Dr. Jennifer Reinhart, a small animal internal medicine specialist at the University of Illinois Veterinary Teaching Hospital in Urbana, explains that parvo is a problem that can be seen in dogs of any age.
Can vaccinated dogs get parvo? Short answer: YES! Some may think once their dog is vaccinated they can't catch Parvo, but the virus has different strains and reinvents itself. So unfortunately, dogs definitely can still catch the parvovirus.
Puppies are vaccinated against parvo at approximately 6, 8, and 12 weeks of age. They are vulnerable to the disease until they have received all three shots in their vaccination series, which means owners need to take extra precaution during this time to prevent their puppies from contracting the virus.
Adult and older dogs who contract parvo have better chances of survival than puppies. The survival rate of dogs treated by a veterinarian is 68–92%.
Your puppy will vomit and have diarrhea if canine parvovirus is present in their system. Vomit may be clear or a yellow or brown color, and diarrhea will often contain blood and be a light yellow or mustard colored hue.
Causes of Parvo
Ingestion: A dog becomes infected with canine parvo after coming into contact with microscopic particles of the virus from contaminated feces. The virus enters the dog's system through the mouth. It then takes about three to seven days for the disease to become active in the body.
IV fluids and management of electrolytes are the cornerstone of treatment for parvo. Antibiotics are given to prevent secondary infections, along with medications to help relieve vomiting, nausea and pain. De-wormer should be given since many puppies also have intestinal parasites that can worsen diarrhea.
It's so serious, in fact, that preventative parvovirus vaccinations for dogs are recommended between the ages of 6 to 16 weeks. Because young dogs receive the most attention regarding the illness, pet owners may wonder, can my dog get parvovirus at any age? The answer to this important question is, yes they can.
Once a puppy has symptoms of parvo, if left untreated they can die within 48 - 72 hours. It can be simply diagnosed and survival is possible if treated soon enough. If left untreated the mortality rate is as high as 91%.
In the U.S., people tend to get infected with parvovirus B19 more often in late winter, spring, and early summer. Mini-outbreaks of parvovirus B19 infection occur about every 3 to 4 years. Since parvovirus B19 only infects humans, a person cannot get the virus from a dog or cat.
What are the first signs of parvo in a dog? Initial signs that your dog may have contracted parvo are running a fever, lethargy, lack of appetite, and anorexia. These initial signs may progress and can result in vomiting and diarrhea within two days after showing their first symptom.
This illness is expensive to treat and ravages a dog's body – symptoms often include severe vomiting and diarrhea. Some find that there is a distinct metallic smell to feces infected with parvovirus. If left untreated, parvo cases can escalate quickly and dehydrate the dog to the point of no return.
Symptoms of Parvo
Your dog will not drink water nor eat, and very soon the pup will be stretched out and down on the ground, unable to get back up. They will become limp, weak, and unable to hold themselves up. Parvovirus, when left untreated, is often fatal. It requires veterinary oversight.
Dogs that develop parvo will show symptoms three to 10 days after being exposed. Symptoms include: vomiting, lethargy, diarrhea (usually bloody) and fever. The gastrointestinal tract is where the heaviest damage occurs.
Certain breeds and types of dogs appear to have a higher risk of parvovirus infection or show more severe illness once infected. These include Rottweilers, Doberman Pinschers, Labrador Retrievers, German Shepherds, Bull Terrier breeds, and Alaskan sled dogs.
Parvo can be found in almost any environment. It is transmitted when a susceptible dog comes in contact with the virus. This includes contact with the feces of an infected dog, or objects that contain the virus (shoes, clothes, bedding, bowls, grass, carpets, floors, etc).
Now, for most dog owners in Australia, parvovirus is a disease that is part of their pet's regular vaccination regime. Since its emergence, parvovirus remains a leading cause of enteritis (small intestine inflammation) in dogs, despite effective vaccines.
How does it spread? Parvovirus is highly contagious and can stay on surfaces and in environments for a long period of time—withstanding heat, cold and humidity. Dogs can contract the virus by interacting with infected dogs, or by coming into contact with contaminated faeces, surfaces or environments.
Parvo is a preventable disease, but even vaccinated dogs are not 100% protected from the virus. Vaccines for the parvovirus are recommended for all puppies and are usually given in a series of three shots when the pup is between 6-to-8 weeks old, again at 10-to-12 weeks, and at 14-to-16 weeks.
A pet infected with parvovirus may develop a fever and behave lethargically, possibly refusing food within the first few days of infection. Within 24-48 hours, copious vomiting and diarrhea present, often containing blood in the later stages.
The average recovery time for parvo in dogs is between 5 to 10 days depending on the severity of the infection. Since the immune system is very weak during this time, it's possible the dog may pick up a secondary infection that can lead to an increase in the recovery time.