R.I.
If your dog died of parvo it is a highly contagious disease and it is next to impossible to rid you house of the virus. If you get an other puppy and the virus is still in the house your new puppy can contract it and also get very sick. If you have any old toys or beds that your dog used including food dishes you need to get rid of them and bleach your entire house before getting a new dog if you dog had this disease. If this is what your dog had let me know and I can give you more info on how to keep future pets safe.