Experimental parvovirus infection in dogs

Area of Science:

• Veterinary Virology
• Canine Infectious Diseases

Background:

• Canine parvovirus (CPV) is a highly contagious pathogen causing significant morbidity and mortality in dogs.
• Understanding the pathogenesis of CPV infection is crucial for developing effective prevention and treatment strategies.

Purpose of the Study:

• To investigate the clinical, hematological, and pathological outcomes of experimental canine parvovirus infection.
• To elucidate the pathogenesis of CPV infection in dogs.

Main Methods:

• Eight-week-old dogs were inoculated orally and intranasally with cell culture origin CPV.
• Clinical signs, fecal viral shedding, and hematological parameters were monitored post-infection.
• Pathological changes in affected dogs were examined.

Main Results:

• Three of five dogs developed clinical signs including anorexia, depression, diarrhea, neutropenia, and lymphopenia.
• Subclinically infected dogs exhibited lymphopenia followed by lymphocytosis.
• One dog succumbed to the infection; recovery was linked to viral clearance and immune response.
• Intragastrically challenged dogs showed mild clinical signs and panleukopenia.
• Pathological findings, including bone marrow depletion, resembled spontaneous CPV disease.

Conclusions:

• Experimental CPV infection closely mimics the natural disease in dogs.
• Hematological changes, particularly neutropenia and lymphopenia, are key indicators of CPV infection severity.
• The study provides insights into the pathogenesis and disease progression of canine parvovirus.