I was recently on a medical mission trip to Peru where we were, ironically, treating people for worms. We were in Peru for 12 days; during the first week, we spent three days in a jungle village where a good 75% of the village had obvious worm infestation and malnutrition. The second day we were there doing clinic, I, and another member of the team, walked around the clinic building (it had a bark-wood floor) with barefeet because our shoes were practically saturated with water and mud, and at the time, trenchfoot seemed more likely than hookworm. After about six hours, I put my shoes on, and kept them on, for the duration of the trip.
When we got back to the States, about two weeks ago, we were all given a 400 mg dose of Albendazol. I did not, and still haven't taken mine. About 0500 this morning, though, I woke up scratching the daylights out of my ankle. I had about a dozen, red, papules over my left ankle bone, another seven or so over the knife-edge of my foot, and a few on the inside. I had another dozen or so on my right ankle as well.
Hookworm was my first thought, but this is 23 days after I was walking around barefoot. Could this be something else, or is parasitic infestation the answer?