Study: US Salmon may carry Japanese tapeworm

FILE - In this May 17, 2013 file photo, Nestor Guillermo, an expert fish filleter with Ocean Beauty Seafoods, fillets a 40-pound Copper River king salmon from the first shipment of the season of the valuable fish from Alaska, in Seattle. A growing number of restaurant customers and grocery store shoppers in the country are asking for Alaska’s Copper River sockeye salmon by name. But the marketing effort that popularized the firm, red fish could be in jeopardy as the commercial fishermen who provide much of its funding decide whether to pull their support. In 2005, the fleet of Prince William Sound fishermen who hang curtain-like nets from their boats to catch salmon voted to assess itself a 1 percent tax to fund Alaska’s first regional seafood development association. The fishermen who let out nets from shore joined in 2009. (AP Photo/Ted S. Warren, File)

(WCMH) — A warning for anyone looking to dine on Alaskan wild salmon.

A study published by the Centers for Disease Control and Prevention says salmon caught in Alaska has been infected by the Japanese broad tapeworm.

The tapeworm is a parasite that, in exceptional cases, can cause serious medical problems, such as intestinal obstructions. However, most people never develop symptoms after they’re infected.

The CDC says the tapeworm can also grow up to 30 feet long.

At least four species of Pacific salmon are known to carry Japanese tapeworm infections, chum salmon, masu salmon, pink salmon and sockeye salmon.

The salmon are exported on ice, unfrozen, around the world.

According to CNN, the salmon appear in restaurants around the world. Infections caused by the Japanese tapeworm may occur anywhere, from China to Europe, from New Zealand to Ohio.

Adequately cooking or freezing the fish can destroy the tapeworm.