I think it can live in the soil clover, for about 5 years or so. I don't think it matters if the dog dies from it, if a dog with parvo is in the yard then it will hang around. Disinfecting everything is really important because it is so easily spread.

And even if your puppy has been vaccinated, don't take it anywhere or meet other dogs until the vaccine has had time to work, I think it's about 2 weeks?

Parvo is just awful...but I think the vaccine is pretty effective isn't it?