Canine parvovirus causes severe gastrointestinal disease with high mortality in unvaccinated dogs, and the welfare contrast between preventable disease and survival with intensive treatment makes vaccination critical.
Parvovirus causes some of the most severe acute suffering seen in companion animal medicine. Affected puppies experience profound vomiting, bloody diarrhea, pain, and rapid deterioration leading to dehydration, sepsis, and death. Treatment is expensive and not always accessible, leaving some affected dogs without the intensive care required for survival. The disease is almost entirely preventable through vaccination, making each case a reflection of a vaccination failure. Communities with low vaccination rates face endemic parvovirus that causes ongoing preventable welfare emergencies.