How long can parvo incubate before onset?
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Expert Answer
Parvo incubates 3 to 14 days, during which infection cannot be detected. Early onset shows fever, poor appetite, vomiting and diarrhea; take the dog to a vet promptly. Parvo is a highly deadly disease, and early treatment raises the cure chance.
In addition, curability depends on the dog’s constitution; weaker dogs are harder to cure.