Canine parvovirus
Canine parvovirus is a serious and highly contagious viral disease that mainly affects young dogs. It mainly attacks the intestine and the immune system, which can lead to severe dehydration. It is one of the major causes of mortality among...
What is it?
Canine parvovirus is a serious and highly contagious viral disease that mainly affects young dogs. It mainly attacks the intestine and the immune system, which can lead to severe dehydration. It is one of the major causes of mortality among unvaccinated puppies in Tunisia and around the world.
Commonly observed signs
These signs are neither exhaustive nor specific. Only a veterinarian can establish a diagnosis.
Related signs — each one links to its page:
Typical signs include repeated vomiting, often bloody and smelly diarrhea, severe fatigue and loss of appetite. The dog may also present with a fever and rapid dehydration which worsens its general condition.
When to consult without delay
This list does not replace veterinary advice. It gathers situations that justify a prompt consultation.
Causes and risk factors
The disease is caused by canine parvovirus type 2 (CPV-2), a very resistant virus capable of surviving for a long time in the environment. It multiplies rapidly in intestinal and bone marrow cells.
Puppies aged 6 weeks to 6 months are most vulnerable, especially if they are unvaccinated or incompletely vaccinated. Collective environments such as shelters, pet stores or areas where many dogs live also increase the risk.
Transmission
The virus is mainly transmitted by direct contact with the feces of an infected dog or by indirect contact with a contaminated environment, objects or hands. It can survive for several months in the ground or on surfaces, making contamination easy even without direct contact between dogs.
Diagnosis and care
Diagnosis is the veterinarian's responsibility, based on clinical examination and laboratory tests. Care is decided case by case.
If parvovirus is suspected, urgent veterinary consultation is essential because this disease can progress very quickly. Only a veterinarian can assess the situation and offer appropriate treatment.
Prevention
Vaccination according to the protocol recommended by a veterinarian remains the most effective means of prevention. It is also advisable to limit contact of unvaccinated puppies with other dogs and to thoroughly disinfect frequented spaces.
References
WOAH — Organisation mondiale de la santé animale (ex-OIE)
Content reviewed by the TunisieVet editorial team · Updated 18 August 2026
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