CPV mainly infects dogs, especially puppies, which is highly contagious and has a high mortality rate. The disease can occur all year round, but it occurs frequently in winter and spring. Sudden changes in feeding and management conditions, long-distance transportation, cold, and crowding can all contribute to the occurrence of this disease. Sick dogs are the main source of infection. There are a lot of viruses in the vomit, saliva and feces of sick dogs. The virus can survive for several months to several years in the feces, and the recovered dogs can still detoxify through the feces for a long time. Regular check-ups with canine parvovirus testing kits can better protect your dog's health.