I would not wait until 16 weeks if you want to socialise this pup and get them out and about.
While its true one vaccine as a puppy is all thats needed after 16 weeks its does not mean the puppy is actually safe until this time.
you are risking having the maternal antibodies dropping at the normal time frame (7 to 12 weeks..longer in some breeds like rotties-link at the end of the page explains well) and having a puppy with no immunity at all to this horrible disease until it gets the very late vaccine.That timeframe window is also the most likely infection time for parvo.....and when they are least likely to survive infection with the diseade.
As for the poster who says its not a serious disease...
As a grim example when I was a student vet we had a litter of ten unvaccinated greyhound pups come in with parvo. We did every intervention we had available at the time to try to save them(intravenous fluids,antibiotics to prevent secondary infection, antiemetics to help control the vomiting..feeding those that could keep food down massive amounts of tlc) but its a viral disease and only their own bodies can fight the virus once its taken hold.
the parvo virue essentially works by detroying the cells in the digestive system. They vomited continually and their intestines essentially shredded off in a bloody diarrhoea for days...
This isnt a minor disease in a young animal.
3 out of 10 made it home alive. 1 thrived after the breeder told me later on that the other 2 were in his words "never right after".
Off the top of my head I can think of at least 20 other dead puppies from Parvo as a student but il admit I stopped counting after a while....
We used to give 50:50 odds when admitting a patient.higher odds if they were willing to pay and go to an emergency centre for heavier intervention then we could offer.
Once I moved areas to where vaccinations were more common and the disease is kept better under control with herd immunity Ive rarely seen this disease.
This is the vet partner site about parvo and explaining why the vaccines are given at intervals and a bit about titres etc
www.veterinarypartner.com/Content.plx?P=A&C=&A=589&SourceID=
And the centre page with all the links about parvo disease listed.
www.veterinarypartner.com/Content.plx?A
I could understand waiting until 12 weeks and keeping the pup isolated until that age as a prevention.....but the 16 week wait means missing the socilisation window and bringing an unvaccinated pup out and about before that age is negligent and a massive risk to take with this severe of a disease in my opinion.