Unvaccinated people around your newborn?

I am currently 16 weeks pregnant. And today I stumbled across a post on good ole Facebook where my good friend Caitlyn was stating her stance in being "anti-vax" and stated that she is NOT vaccinated and never has been. She has never shared that part if her medical history with me. As a soon to be mom, I cant help but not want her around my newborn. I'm worried about what she could possibly be carrying and pass in to my newborn. With my due date being in the middle of flu season and all the other lovely colds that go around in the winter would it be completely irrational to not have her visit my newborn ...?

I am just not wanting to risk it.

Any input is welcome 😁