Simply walking through an area with parvovirus is enough to bring the virus home to your dog. Parks and even a simple walk around the neighborhood can expose your dog to the virus. If your dog has not received all of his recommended shots and his immunity is low, there is a possibility of contracting parvo.
http://dogcare.dailypuppy.com/can-dog-parvo-even-vaccinated-disease-6204.html
Puppies Need Parvo Vaccines. Parvo vaccines typically begin between 6 and 8 weeks of age, with boosters every three to four weeks until the puppy is 16 to 20 weeks old. An additional booster is administered at the puppy’s one-year checkup.
http://dogcare.dailypuppy.com/can-dog-parvo-even-vaccinated-disease-6204.html
Can a dog get parvo from the vaccination? My 7month old puppy was vaccinated on a saturday with the parvo vaccination and came down sick on Monday with parvo. I was just wondering if she could have contracted the disease from the shot. She as a stray when we found her so we are not sure what shots she had, had.
https://answers.yahoo.com/question/index?qid=20100915084715AAYKP0F
Canine parvovirus is a common viral disease that is caused by the canine parvovirus type 2 (CPV-2) virus. The virus attacks the gastrointestinal tract and immune system of puppies and dogs, causing severe vomiting and diarrhea. It can also attack the hearts of very young puppies.
http://www.vetstreet.com/care/parvovirus-vaccine-for-dogs
Parvovirus Vaccine for Dogs. IN THIS ARTICLE. Dogs catch canine parvovirus, which causes the disease known as parvo, from exposure to infected dogs, their feces, or objects/areas contaminated with their feces. Treatment is supportive and potentially expensive; left untreated the virus is often deadly.
http://www.vetstreet.com/care/parvovirus-vaccine-for-dogs
I also thought that adult dogs would be a bit more resistant to parvovirus than the reports from Mesa County seem to show. Parvo is widespread in the environment, and exposure to low levels of the virus in an otherwise healthy, previously vaccinated adult dog should act as a natural booster of sorts. I don’t have the details of these cases. Maybe these dogs weren’t well-vaccinated previously.
http://www.petmd.com/blogs/fullyvetted/2011/oct/parvo_in_adult_dogs-11828
The good news is that this is the first time we’ve ever heard a vet admit that Parvo shots can actually give a dog Parvo – something we’ve known for years. But to suggest that if you do the shots, your dog might get Parvo, but if they do it for you, he won’t, is just ludicrous.
http://www.myorganicdoggie.com/health/parvovirus-shots-what-your-vet-probably-wont-tell-you
Best Answer: Parvo vaccination is a dead virus, so more than likely the dog had the parvo exposure before you found it and the dog got the disease during the exposure time. The parvo shot was too late to stop the disease. Hope the dog does well. You sound like a very conscientious, caring person Good luck.
https://answers.yahoo.com/question/index?qid=20100915084715AAYKP0F
Well, exactly the same thing is going on with dogs and their Parvovirus shots. If you stop to consider this for a moment, the vaccines contain modified versions of the live virus, and they are designed to weaken the dog’s immune system, as that is how they are supposed to work – well, that’s the theory.
http://www.myorganicdoggie.com/health/parvovirus-shots-what-your-vet-probably-wont-tell-you
Almost every dog owner assumes that they need to give their dog Parvo shots to stop them from getting the dreaded Canine Parvovirus, but if your vet told you the truth about these vaccinations, especially the three facts we’ve uncovered based on hundreds thousands of Parvo cases we’ve dealt with, as well as our extensive research, then you’d ...
http://www.myorganicdoggie.com/health/parvovirus-shots-what-your-vet-probably-wont-tell-you
when can a dog get a parvo shot
A dog can get a parvo shot between 6 and 8 weeks of age, and every three to four weeks until the puppy is 16 to 20 weeks old.  Parvo vaccines typically begin between 6 and 8 weeks of age, with boosters every three to four weeks until the puppy is 16 to 20 weeks old.