Hi! This is my first time posting something on here. I have some questions. I am FINALLY getting my yorkie tomorrow

, and I already have a Shih Tzu and he's a neutered male. My concern is feces and how close I should let them be together considering my yorkie has only had one shot.

. I don't want him to get parvo or anything. Please if someone could get back to me concerning this it would be great! thanks!
Janice