Red-worm-of-trout can infect humans and other mammals when they eat uncooked or undercooked fish caught in fresh water and can be lethal to some animals. Red-worm-of-trout can infect humans and other mammals when they eat uncooked or undercooked fish caught in fresh water and can be lethal to some animals. Fishing and Aquaculture Industry, Animal Science, Animals, Fish, Local Food Systems Latest business news