I asked our breeders if to wash him but I could not even finish the sentence when I was interrupted with a "noway" and was told the last thing we should provoke now is for the puppy to get sick, which at that age can be a major problem. He does not have all vaccines yet.
I would still contact your vet though.
That info is just what my vet told us. Hugo had no shots and the vet said that we needed to stop the reproduction of the fleas without putting any chemicals on him since he was so young. Also you might want to treat your house.