Study: Dangerous parasite could be lurking in your sushi
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An illness called caused by eating fish or seafood contaminated by parasites, 'Anisakiasis,' is on the rise.
The increase is notable in western countries where eating sushi and other raw or uncooked fish is now more popular.
The report from BMJ Case Reports highlights a study of a previously healthy man in his 30s who developed severe upper gut pain.
A week later he was in the hospital, with an upper gastrointestinal endoscopy performed to reveal a parasitic worm penetrating his stomach.
The man said he had recently eaten sushi.
The study's lead author says Japan typically sees the most cases of the parasitic herring worm disease, but new estimates suggest there are several thousand cases now in Spain.
The Centers for Disease Control (CDC) says cases are showing up in the United States, South America, Europe and elsewhere.
Scholars on the topic suggest the illness, in general, is under-estimated and under-diagnosed.