Catching and Eating Fish with Black Spots

Here is some information on the black spots found on some fish caught in the Brainerd Lakes Area.  I have always wondered and found this information on a Minnesota Fishing Forum:
"The "Black spots" are caused by a trematode worm. The worms live in the digestive track of fish-eating birds which is where they lay eggs. The bird defecates passing the eggs into the water, the eggs hatch in the water turning into larvae called "miracidiae". The larvae burrows into a snail and eventually into the snails liver. After 6 weeks of living in the snails liver the larvae turns into "cercariae" and returns to the water. The "cercariae" swim around until they locate a fish, then burrow into the fish and the "black spot" forms as the fish heals and new tissue covers the cyst tissue. THE BLACK SPOTS CANNOT AFFECT HUMANS. "