I would absolutely ask the breeder NOT to vaccinate my puppy. And if possible, I would ask the breeder to delay vaccinating the others as long as possible so that you can take your puppy before it's exposed to the shed virus.
The shed virus won't hurt your unvaccinated puppy (although the virus could "use up" some of the puppy's maternal antibodies against parvo).
If you've been reading up on this, I'm sure you're aware that vaccinated pups are not immune to parvo. They can and DO get parvo. And if they do get it, it hits them a whole lot harder than it does an unvaccinated puppy. A puppy's odds of surviving parvo are much smaller if it has been recently vaccinated (or stressed in another way, such as chemical worming).
If you do convince the breeder not to vaccinate your pup, you need to stick to your choice. The puppy will be exposed to the virus via his littermates. If you change your mind when you get him and decide to have him vaccinated, it could overwhelm his system and do a lot of damage.
Unfortunately this has happened to two breeders that I know who decided to vaccinate some of their pups one week and the rest a few weeks later.
The second batch of puppies had severe reactions to their vaccines and many of them died as a result of this over-vaccination (first exposure was the shed virus from their littermates).
If you do receive an unvaccinated puppy who has been exposed to his vaccinated littermates, be very very careful of having him vaccinated any time soon (as in within 2-3 months).
Obviously my own choice would be to go with 0 vaccines for the puppy's sake. At that age, the puppy's own immune system is very immature but he is still well protected by his mother's antibodies (see how well nature works when not messed around with?
).
The vaccine doesn't give the puppy immunity. All it does is destroy the precious maternal antibodies circulating in the puppy's blood and leaves the poor puppy's vulnerable immune system to fend on its own far sooner than intended.
Not only does this leave the vaccinated pup with a badly reduced defence against parvo, but the stress of the vaccines will also weaken his system and make him much more likely to get sick.
I would much rather deal with a young puppy that's protected with his mother's antibodies and that's as healthy as can be. If you're unlucky enough that your unvaccinated puppy is heavily exposed to parvo and develops the disease, at least your puppy will have more time to mount its own defense (with the maternal antibodies slowing the virus' spread).
Most importantly, the puppy will also be in the best shape he can be in to fight the virus.
A recently vaccinated puppy that comes down with parvo is pretty much doomed...
From my own research, I came to the conclusion that the more you interfere with an animal's natural development of immunity, the more likely it is to get sick. Common sense, I know, but with all the vets brainwashing us I felt compelled to look up studies for myself
Best of luck with your little one!! And congratulations on deciding to go for baby number 2
If you do decide to take puppy from its litter "too" young, at least you'll have Oscar around to help finish off baby's education on dog-dog interaction. Have fun :-)
I really hope that Cindy can give you advice on this one. I would follow her advice in a heartbeat regarding raising litters over any vet's, that's for sure