In reply to Brian.

Part of our "visitor prep" is that we give people the rundown on what to do and not to do to avoid illness, before they get here. We have a gripe with other volunteers that brag about how they wash their toothbrush under the tap and stuff like that. Call me conservative, but I follow ALL the rules about drinking water, handwashing, etc. And you know how many times I've had diarrhea since I got out of training a year ago? ZERO. Where we live specifically, they don't have malaria, dengue, or chagas. I got the flu once last year, too. But I would dare to day I've actually been healthier here than in the US; perhaps all the walking and natural food and fresh air.

So, here's the visitor track record:
Devin, 12 days, occasional poop issues. Devin, can you add anything?
Elena, 13 days, nothing of note*
Robin, 13 days, nothing of note*

You can ask my mom about her experience with the Aunts after they return from their Guatemalan adventure in early September.

*folks often get travel constipation etc., regardless of the country.