I have been preaching the dangers of over vaccinating for years. My puppies just get distemper and parvo only at 10 weeks and 14 weeks. I do rabies shots only on those dogs that I show. My vet is a holistic vet and he just gives half doses of the rabies. For kennel cough I use a homeopathic formula I get from the vet. There are too many vets and breeders that start vaccinating puppies at 5 and 6 weeks and it really breaks my heart when I hear about it. I do feel that there is a direct link between vaccinations and so many of the illnesses being seen today.
Here is yet another link with good information about vaccinations:
http://www.deide.net/misc.html
Breeders and puppy buyers: Just google 'danger canine vaccination' and you will find so much information on this subject. Please do your research before you vaccinate. If your vet won't listen, then find a vet that will. You are in charge of the welfare of your babies, many of the vets just see $$$$$$$$$ and they don't want to change the protocol.