> Trying to keep apart until pups second vaccination
You certainly should not be keeping them separated until pup has his shots.
Your dog ahs been vaccinated, eh is no more of a health risk to your pup than you are, assuming you aren't locked in the house with him.
How many new babies do you known who are kept isolated from everyone until several months old when they start getting vaccinated, quite the opposite all the friends and relatives come around and play pass the parcel, with new baby and kiss and breath all over it.
Many of these babies have not even had the benefit of their mothers colostrum to give maternal antibibodies.
Unless your vet has told you of an outbreak in the area, when it would be wise for you