I don't have my medical history from before age 4 (I was adopted) but know that since then I have not had chickenpox or the vaccine. Have out-of-town guest wanting to arrive in five days who was diagnosed with shingles today. I know that shingles is contagious only through actual contact with a blistering sore, but I am still a little nervous. Does Crohn's classify us as "immuno compromised" autoatically or only if on biologics or steroids? (I am only on Pentasa). Don't want to over-react by saying don't come, but at same time don't want to get sick...