I adopted a puppy (destined for the dinner table) in Korea, but sadly it died of Parvo, and it was heartbreaking to watch. My daughter adopted a shepherd mix at Ft. Knox which also had Parvo. The vet gave up on the pup, but allowed my daughter to take home the equipment for IV fluid replenishment, and the dog survived with her around-the-clock care. I have it now in front of me. I’ve also found that if you dab a little honey on a dehydrated, sick dog’s gums it will help the dog to retain the fluids.
Find a farm store with -real- kaolin/pectin suspension and keep it on hand.
I have a gallon jug of it.
That and the rehydration are paramount.
Has the OP come back?
Hell if I’d leave a parvo puppy alone.