Unfortunately, my vet has warned me about the dangers of vaccines actually CAUSING the very disease it was designed to prevent. In fact my vet said the only dogs he has ever known to get distemper were vaccinated against it!
That is scary stuff. Most in here know that I am very cutious when it come to vaccines and I am a proponent of allowing as few as possible and doing titer blood tests instead of continuing to vaccinate a dog for thier entire lives.
As for Raven, I would ask for a titer to determine his immunity to parvo before I would let the vet vaccinate him again. No need if he is already immune as the shot is hard on them.
Did you check out Parvo Guard as I suggested earlier in the thread. It sounds like you caught it early and I am so sorry he is so sick

but he pull through and you should give your breeder a rave review in the breeder section as it is nice to know that she is so compassionate.