Parvo is a very dangerous and fatal disease that can take a dogs life within 48 to 72 hours.
It's very important to take your dog to the vet to have the dog treated to hopefully try and save it's life.
Treating the dog for Parvo doesn't always mean the dog will live but it's worth a try if you can afford the Parvo Treatment but you must get the dog to the vet right away or at least before 48 hours of the dog getting Parvo.