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Hello, this is Dr. Jess. I am sorry to hear about your pup! How long has he been since he first got sick?
Ok. I am going to attach a link here to a webpage on parvo: http://www.veterinarypartner.com/Content.plx?P=A&C=&A=579&SourceID= you will see other links on the right hand side of the page which will give you more info if you are interested in knowing more about it.
It is normally considered most contagious for the first 2 weeks after infection, but we usually recommend isolation from other dogs for up to a month to be on the safe side because it can be shed in smaller amounts for up to 30 days in some dogs. Also, be sure your puppy gets a very good bath before he comes into contact with other dogs, as any feces that may have gotten on his fur and hasn't been completely washed off could be hardboring the virus. You also need to worry about environmental contamination if you had htis dog in your home before he got ill, because the virus can be in the environment for quite some time, posing a hazard to the other puppy. HEre is info from that article on environmental contamination:
Here's what we know about disinfection:
As far as next vaccines, he will be protected from parvo naturally now for a few years, but he should continue his puppy vaccines because they protect against other diseases, such as distemper. He should wait until he is fully recovered from his illness and back to normal behavior/energy/stools before being vaccinated.