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Cases of liver fluke, which is transmitted through mud snails, have been rising over the long term.

The parasite, Heterobilharzia americana, is a flatworm commonly referred to as liver fluke.

A parasite called Heterobilharzia americana, a flatworm commonly referred to as liver fluke, was behind the illness of the 11 dogs.

That's the reality for ants infected with the lancet liver fluke, a tiny parasitic flatworm.

Or, indeed, worm: In high school biology, she and other students dissected a liver fluke, slicing the head in half with a razor until two new heads formed.