Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
A friend of mine adopted a new dog more than a week after his dog died of parvo. This new dog then came down with parvo and died, so the virus is definitely resilient and can remain infectious for a long time.
"I don't have a telephone number to a vet ready." You obviously care about your pet's health. Keep this number on hand, whether stored in your phone or on a piece of paper in your wallet.