The fish nematode which is like trichinosis in pigs, does not live in humans. It causes damage to the intestines as it tries to invade the body though. It is very bad for a person and gets worse each time a person is infected.Well I think I remember years ago when the sushi craze hit they had lots of people getting worms. I thought they would be in digestive system too but I saw a nematode in a pack of fresh fish at Costco a few years ago. I’m going to have to do some googling and yapping before I spread inaccurate stuff.
My sister worked in Alaska cleaning salmon and she said by late August the worms were terrible. My aunt and uncle fished up there for 40 years and she worked in seafood safety as well and she won’t eat anything raw. Having said that she faints at a medium rare steak!
It is not as common on salmon but is very common in cod and red snapper. Sushi grade salmon is not supposed to have them. What happened was that some sushi places bought farmed salmon that was not sushi grade. It might have been the supplier cheating them though