43 years and never had a bit of it despite being outside all the time . . . even went to a motor vehicle accident years ago and was right in the middle of a patch. My wife who was there and the Assistant Chief who were beside me got it bad back then . . . Ended up with this about a week ago . . . while geocaching in the woods. I think the worse part is due to the fact that I had a fresh scratch and it may have got infected.