Canine parvovirus is a highly contagious and potentially fatal disease in unvaccinated dogs, particularly puppies. Vaccination and supportive care are critical for prevention and survival.
Parvovirus causes one of the most severe acute welfare events seen in companion animal medicine. Affected puppies deteriorate rapidly: vomiting, profuse bloody diarrhea, lethargy, and septic shock develop within days. The suffering is extreme, and without intensive treatment, death is the likely outcome. The welfare tragedy is that parvovirus is almost entirely preventable through vaccination. Unvaccinated dogs — often in under-resourced communities or from irresponsible breeders — bear the full burden of a preventable disease. Increasing vaccination access and owner education about the importance of timely vaccination are direct welfare interventions.