L.,
I had a 34 and a 35-weeker. Both of them had the RSV shots, and I avoided taking them out whenever I could (I'm a huge fan of online shopping). That being said, there are times that you just can't avoid going out.
I will never forget standing at the checkout of Walmart, only to have the -cashier- come from behind the register and start groping my first-born about the hands and face (she was in her carseat, in the front of the cart). I've been on -that- side of the register before, and I know precisely just how FILTHY money is. After that, I got a car-seat cover (funny, I found it at Walmart). It looks basically like a miniature fitted sheet (elastic around the corners) with a little flap you can open up to see the baby's face. I used that for a while, then discovered the joy of the baby sling.
If you're comfortable using a baby sling, I've found that it was the biggest deterrant for avoiding unwanted touches (and, both my babies loved it). Most of the time, the sling will cover the baby's face, and it seems as though people avoid the baby, because it's an invasion of your own personal space. I had several that did realize that I was carrying a baby in there, and asked if they could peek. I would just tell them, "Oh, she's sleeping. I really don't want to disturb her." Or, "I'm trying to get her to sleep, right now. I'd like to avoid any distractions, but thanks for asking."
Those worked well for me.
Congratulations and best wishes!
M.