If you haven't had chicken pox and come into contact with the ooze from blisters from someone suffering from shingles during their first few days if they aren't on antivirals yet. Say they scratch at the blisters break them then touch a surface you touch immediately afterwards there is a chance you can get infected.

Now I thought my parents told me as a kid that I had chicken pox when I was two years old. But I'm waiting on the antibody test results to confirm.