A dog that has had parvovirus will not get it again. If a dog has parvovirus and is cured, it will be immune to parvovirus for life. However, within one year after the dog is cured, the body will still contain parvovirus. If it comes into contact with other dogs, it will be very serious. Easily transmitted to healthy dogs. Therefore, it is best not to have contact with other dogs within a year after the dog is infected with parvovirus, and to supplement the dog’s nutrition to improve its resistance.