Hydatids is orally transmitted. Kids in NZ when I was there were told never to suck on stems of grass (or at least not in sheep country).

On a lot of NZ sheep meadows walking with your feet exposed (like in sandals or jandals, as nearly everybody did in summer) meant you got paspalum seeds stuck in your feet. Paspalum is a very productive grass that stays green no matter what and produces vast numbers of discoid seeds with a sharp spike on one end. You couldn't walk across a lawn without getting several of them stuck in you. I presume the stuff was introduced by the sheep farmers.