Will Falconer, DVM Moderator
I seriously doubt the 6 week vaccine immunized your pup, Hazel. No worries, though, you can do the natural exposure protocol and titer again to see if you were successful this time. When that's failed, it's only been because people didn't choose an area with enough dog "traffic," so don't be shy about where you go. Just limit the time of exposure each time, as I've described from Dr. Manziano's research and you should be golden.
If you would, post us again here in a month or so to tell us how you did.