My dog has parvovirus; foamed at the mouth early Jan 22, diarrhea in the afternoon, tested positive Jan 23, then bloody stool and foam at night. At which stage and what is the survival rate?

With bloody stool, the dog is in the middle-to-late stage of parvovirus infection, with about a 40-50% cure rate under active treatment. Survival also depends on the dog’s immunity, the treatment plan, and response to medication.

Parvovirus almost always brings vomiting and bloody stool, which many dogs must pass through; controlling the bleeding and vomiting usually means a good chance of survival, and severe anemia may need a transfusion to pull through.