We called up the vet and they said it was pretty unlikely that Palbert could contract the virus, but to be watchful. He also said that we took the right steps in trying to prevent the spread. So, fingers crossed, everything will be fine. I'm still pretty peeved at Petsmart for allowing that trainer to continue to teach the class.. Tuffy and another dog already have had all their shots, but there was a Doberman that hadn't had all his shots and I've been reading that they are more susceptible than other dogs to Parvo so I feel that they shouldn't have even taken the chance of having a trainer that was exposed to it in there. I'm just really shocked at how unprofessional they turned out to be.. <_<