Yep thats the one (Echinococcus), Fox eat a lot of mice. They use scat to mark there territory, the scat dries out and the parasite eggs can go airborne.

They had an outbreak here in people. They eventually figured out it was the Fox eating Blackberries. They'd leave parasite eggs on the lower berry branches. People were picking and eating the berries. They actually put a front page notice in the newspapers, don't eat the berries from low on the bush.