According to the DN report, one unlucky man in the United States suffered from a truly stubborn cod worm after eating sushi. The parasite crawled up his esophagus, and from there proceeded to eat its way through into the man’s neck. Another incident reported by the paper was one sufferer who coughed up live worms after experiencing a ticklish and achy throat. But when a similar revelation was made in Germany in the 1980’s it caused a significant drop in fish consumption and authorities are fearing the same will happen in Sweden, Lunneryd told the paper.