Overview
Congenital parvoviral infection primarily affects puppies, manifesting as severe gastrointestinal and systemic illness due to canine parvovirus (CPV) infection 1. The virus can cause significant intestinal damage, lymphoid depletion, and systemic effects including myocarditis 1.Diagnosis
Clinical signs: Fever, anorexia, depression, vomiting, and diarrhea 1.
Histopathology: Degeneration and necrosis of intestinal crypt epithelial cells, villous atrophy, and lymphoid depletion in thymus, Peyer's patches, mesenteric lymph nodes, and spleen 1.
Laboratory tests: Detection of CPV in intestinal contents, thymus, spleen, mesenteric lymph node, and liver via viral isolation 1.
Serology: Seronegativity at baseline, followed by seroconversion in surviving puppies 1.Management
Supportive care: Fluid therapy to manage dehydration, electrolyte imbalances, and nutritional support 1.
Antimicrobial prophylaxis: To prevent secondary bacterial infections, though specific agents and dosing are not detailed 1.
Hospitalization: Close monitoring and intensive care for severe cases 1.Special Populations
Pediatrics: Congenital infection predominantly affects very young puppies, with higher mortality in younger litters (4-week-old pups had higher mortality compared to 7-week-olds) 1.Key Recommendations
Aggressive supportive care including fluid and electrolyte management is crucial for survival (Evidence: Moderate 1).
Monitor and manage lymphoid depletion and gastrointestinal damage through histopathology and clinical observation (Evidence: Moderate 1).
Consider hospitalization for severe cases to ensure intensive monitoring and intervention (Evidence: Expert opinion 1).References
1 Robinson WF, Wilcox GE, Flower RL. Canine parvoviral disease: experimental reproduction of the enteric form with a parvovirus isolated from a case of myocarditis. Veterinary pathology 1980. link