Human Nanophyetiasis: Transmission by Handling Naturally Infected Coho Salmon (Oncorhynchus kisutch)

The first US case of human nanophyetiasis that does not involve ingestion of raw or under-cooked salmonid fishes is reported. The patient worked with highly infected fish. Hand contamination with the infectious metacercariae of the digenetic trematode Nanophyetus salmincola (family Troglotrematidae)...

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Bibliographic Details
Published in:The Journal of infectious diseases 1990-01, Vol.161 (1), p.146-148
Main Authors: Harrell, Lee W., Deardorff, Thomas L.
Format: Article
Language:English
Subjects:
Adult
Animals
Brackish
Concise Communications
Diarrhea
Eggs
Foodborne illnesses
Freshwater
Humans
Infections
Ingestion
Kidneys
Marine
Marine fishes
Metacercariae
Nanophyetus salmincola
Occupational Diseases - parasitology
Oncorhynchus kisutch
Parasite Egg Count
Parasitic diseases
Salmon
Salmon - parasitology
Trematode Infections - diagnosis
Trematode Infections - transmission
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Summary:The first US case of human nanophyetiasis that does not involve ingestion of raw or under-cooked salmonid fishes is reported. The patient worked with highly infected fish. Hand contamination with the infectious metacercariae of the digenetic trematode Nanophyetus salmincola (family Troglotrematidae) occurred during the handling of fresh-killed, juvenile coho salmon, Oncorhynchus kisutch. Diagnosis of nanophyetiasis was based on the clinical findings of chronic diarrhea, nausea, abdominal discomfort, and a peripheral blood eosinophilia of 43% and was confirmed on finding characteristic bipolar eggs in a stool specimen. The patient rarely ate seafood products and never ate raw or cold smoked fish. He responded favorably to praziquantel and was asymptomatic after therapy.
ISSN:0022-1899
1537-6613
DOI:10.1093/infdis/161.1.146