I think getting him out and getting socialized is very important. Just be smart on where you take him. We used to take our pup to her breeder for socialization, they had training classes going on and we figured all the dogs up there were well taken care of.
We also took our dog around our immediate neighborhood. I've lived here long enough to know that people are good about keeping their dogs healthy (although some could use more exercise!).
I avoided places where there were homeless people with their dogs; beaches and downtown areas, you probably know these areas in your town. I could not trust that their dogs were up to date on vaccinations.