Diphyllobothrium mansonoides
Diphyllobothrium mansonoides is a species of parasitic worm that belongs to the family Diphyllobothriidae. It is a type of tapeworm that primarily infects mammals, including humans.
Life Cycle[edit | edit source]
The life cycle of Diphyllobothrium mansonoides involves several stages. The adult worm resides in the small intestine of the definitive host, where it produces eggs that are passed in the feces. These eggs then hatch in water, releasing a ciliated larva known as a coracidium. The coracidium is ingested by a copepod, a small crustacean, where it develops into a procercoid larva. The infected copepod is then consumed by a second intermediate host, typically a small fish, where the procercoid develops into a plerocercoid larva. This larva is the infective stage for the definitive host, which becomes infected by consuming raw or undercooked fish containing the plerocercoid larvae.
Clinical Manifestations[edit | edit source]
Infection with Diphyllobothrium mansonoides can lead to a condition known as diphyllobothriasis. This is characterized by abdominal discomfort, diarrhea, nausea, and vomiting. In severe cases, the infection can lead to vitamin B12 deficiency, which can result in megaloblastic anemia.
Diagnosis and Treatment[edit | edit source]
Diagnosis of Diphyllobothrium mansonoides infection is typically made by identifying the characteristic eggs or segments of the worm in a stool sample. Treatment usually involves the administration of a single dose of praziquantel, a medication that is effective against a wide range of parasitic worms.
Prevention[edit | edit source]
Prevention of Diphyllobothrium mansonoides infection primarily involves avoiding the consumption of raw or undercooked fish. In areas where the parasite is common, fish should be thoroughly cooked or frozen before consumption to kill any larvae.
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Contributors: Prab R. Tumpati, MD