Infectious Disease Compendium

Diphyllobothrium latum


Cestode, a fish tape worm.

Epidemiologic Risks

Eating under cooked or uncooked freshwater fish, including salmon. Gotta love that sushi.


Usually without symptoms; some have weakness, salt craving, diarrhea, and abdominal discomfort. Prolonged or heavy D. latum infection may lead to megaloblastic anemia due to B12 deficiency.


Niclosamide 2 g po x 1 or praziquantel 5 - 10 mg/kg po x 1.


ICD9 Codes (Soon to be supplanted by ICD10)

Diphyllobothriasis (intestine) 123.4; larval 123.5.