I'm sorry to hear about Cassie, but happy to hear about your new dog! I had a dog with parvo in my backyard about 3 years ago. I've brought a 1 year old dog home, and a 9 week old puppy home to live with me since then. It was against my vet's advice, but I couldn't help it. I bleached the porch, sanitized everything. Made sure they were vaccinated. No problems.