This has made me curious. Are the first vaccines being done earlier now? All my pups have come to me at 8 weeks and without having had any jabs at all. I got both sets done at my own vet so no problem with needing to use the same brand as the breeder.
I think some breeders like to start vaccines early and some either prefer to wait until later or leave it to the new owners. My first 2 Cockers, in the late 1980s, came to me unvaccinated and had their first vaccines about a week after I got them, so 9-10 weeks. William and his siblings had their first vaccines arranged by the breeder when they were 7 weeks old and Louis was unvaccinated when he came to me because his breeder's vet recommended waiting until at least 9 weeks old. Of them all, William is the only one who has had problems with his skin and digestion, but I don't know if that's just coincidence.
The WSAVA now recommends that puppies don't have their final core vaccine until 14-16 weeks old as if given earlier than that the effectiveness could be compromised by antibodies from the dam of the puppies. If given at 14-16 weeks there is 98% effectiveness.
http://www.wsava.org/sites/default/files/New%20Puppy%20Owner%20Vaccination%20Guidelines%20May%202013_0.pdfQuote - The WSAVA also states that the last puppy vaccine against the core diseases should be given at 14-16 weeks of age. This is because, before this time, the mother passes immunity to her puppies, and this ‘maternal immunity’ can prevent the vaccine from working. A high percentage (98%) of core puppy vaccines given between 14-16 weeks of age will provide immunity against parvovirus, distemper and adenovirus for many years, and probably for the life of the animal.