54/55. Grew up in Ohio spending every day off trail in the woods. Misidentified one because the site gets cropped off on mobile and I got over confident and didn't scroll to see the whole photo.
52/55...had a couple of false positives, because I'm paranoid. I'm pretty sensitive to it, and it's all around where I live. As careful as I am, though, I still manage to get it once or twice a year.
False positive won't hurt me, false negative will. A little exposure is bad enough on me, but even a moderate amount and I go to the doctor before it turns into a dangerous situation.