[header] How to diagnose parvovirus in dogs [title] Look for the first signs of illness. [step] These first signs are vague and non-specific, and include restlessness, fever, lack of energy, and loss of appetite. Sickness and diarrhea usually develop within 24-48 hours of this.
[substeps] The incubation period for parvo is 5-7 days, but can be as little as 2 days or as many as 20 days. [title] Be concerned if your dog is vomiting and has diarrhea.