Parvovirus in dogs is most serious when it is 3 to 5 days old. The affected dog will be severely dehydrated and may also have digestive system symptoms such as diarrhea. If the dog can survive this stage, the dog's mental state will gradually recover, the white blood cells in the body will gradually return to normal levels, and the dog will gradually recover.

Parvovirus infection is a common canine disease. The virus is mainly spread through direct contact, airborne and feces. Spread through pollution and other means. The clinical manifestations of parvovirus infection are diverse, including fever, coughing, sneezing, runny nose, red and watery eyes, and other symptoms.