Pollock fish is an infested species of fish and many say it's "ossur"
Fish sticks, patties, Surimi, etc are made with the Pollock fish.
Some are using "minced-Pollock".
Minced is not ground, therefore it may have whole worms present.
Some even have whole pieces of Pollock fish in the fish sticks.
This is the reason many refrain from using anything with pollock or other infested species.
If it doesn't say "checked for infestation" don't use it.
If it say "free from issues of infestation", may mean that the Certifier is not concerned about infestation in fish, which is not sufficient for one that is concerned about fish infestation.