(NEWSER)\u00a0\u2013 U. S. salmon lovers feeling bad for those overseas infected with a pesky parasite can start worrying about themselves.
The Japanese broad tapeworm, aka\u00a0 Diphyllobothrium nihonkaiense , is usually only found in fish from Asia’s Pacific coasts,\u00a0 CNN \u00a0reports, but per a study in the CDC’s\u00a0 Emerging Infectious Diseases \u00a0journal, wild salmon netted in Alaska were also plagued by the parasite.
Researchers now say that could mean salmon caught anywhere off North America’s Pacific coasts could be affected, though the health effects aren’t generally serious. The scientists, however, warn the problem could spread if not remedied: Because salmon is often packed and transported on ice (but not frozen), the tapeworm’s larvae may be able to survive the trip, possibly infecting consumers in Europe, New Zealand, China, and other parts of the US.
The researchers cut open 64 wild Alaskan salmon in 2013 to find the larvae (some up to 15 mm long), and gene sequencing identified it as the Japanese tapeworm. Four species are known to carry it: chum salmon, masu salmon, pink salmon, and sockeye salmon.
Per\u00a0 Food Safety Magazine , infection risk is increased when consuming raw or undercooked fish. A preventive medicine professor at Vanderbilt University School of Medicine tells CNN most infected humans remain asymptomatic \u2014 some may feel slight abdominal discomfort or nausea \u2014 though there are rare cases in which the infection can turn serious. The\u00a0 CDC \u00a0notes that freezing or cooking the fish will annihilate\u00a0Diphyllobothrium\u00a0parasites.
(A Canadian man bit into a piece of salmon and\u00a0 fell into a coma .)
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