Japanese tapeworm detected in wild salmon

Japanese tapeworm detected in wild salmon

USA salmon may really carry Japanese tapeworm in this case people might take consider before consuming raw fish the threat of parasites in it. With the species that can carry the broad tapeworm identified, and previously only thought to be found in salmon in Japan, South Korea and the Pacific coast of Russian Federation, it was surprising that in July 2013, the tapeworm was found in five species of salmon and rainbow trout collected in waters off the coast of Alaska. One of these is the tapeworm.

The broad tapeworm, Diphyllobothrium nihonkaiense, has been detected in wild pink salmon from Alaska, leading researchers to believe that salmon from at least American and Asian Pacific coasts can be potentially unsafe to humans who eat the fish raw.

Based on those results, researchers warn that salmon caught anywhere along the Pacific coast of North America may be infected.

Nearly all of the previous cases of tapeworm infections occurring in Japan, South Korea and the Pacific coast of Russian Federation had actually been caused by Japanese tapeworms rather than D. latum. Now, researchers have found parasites in salmon in the US.

Could Japanese tapeworms also be infecting salmon caught in the United States?

The study comes after a team of scientists examined 64 wild Alaskan salmon by filleting them into narrow slices and observing their internal organs under microscopes.

They found out that there were larvae between eight to 15 millimeters long.

There they discovered larvae and after conducting gene sequencing, they were identified as Japanese tapeworms.

At least four species of Pacific salmon are known to carry Japanese tapeworm infections. Researchers also point out that because Pacific salmon is transported unfrozen, parasites are able to survive after being transported to other parts of the world.

There was no mention in the study of infection in farm-raised salmon.

Because the Japanese version is from the same family of tapeworms, illness and symptoms should be largely the same, he said. It can grow up to 30 feet long. They are also warning health care professionals to be aware of a parasitic infection when someone presents with abdominal discomfort, nausea, loose stools and even weight loss. About 2,000 cases have been reported, mostly from northeastern Asia.

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