You can get hookworm from walking through areas contaminated with fecal matter. The larva enter through your feet :::shudder:::
Here we have "chicken shoes" specifically for the coop. They are knock-off crocs and they stay on the back porch.
As a kid, I was always barefoot. Mom would always get on to me about running down the sidewalk to my grandparents' house. In the winter. In Pittsburgh. LOL
I do make my kids wear shoes here though. Though not because of the chance of hookworm, but because we have fire ants.