Diphyllobothriasis epidemiology and demographics
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Furqan M M. M.B.B.S[2]
Overview
Diphyllobothriasis occurs in areas where lakes and rivers coexist with human consumption of raw or undercooked freshwater fish. It is particularly common in Japan, Scandinavia, Siberia, with sporadic cases in North and South America.
Epidemiology and Demographics
Diphyllobothriasis is more common in people eating raw or undercooked fish. Infection with the broad fish tapeworm is common in temperate and subarctic regions, wherever freshwater fish are eaten raw, as in Scandinavia, Siberia, the Great Lakes, Japan, central Europe, and Chile.
Prevalance
Worldwide, the prevalence of diphyllobothriasis was estimated in the early 1970s to affect 9 million humans globally. Most of the cases were in Europe and Asia with sporadic cases in America. More recent data indicate that 20 million people are infected worldwide but no recent estimation concerning the global prevalence of this parasitosis has been done.[1]
Incidence
Diphyllobothriasis is endemic in Japan and 100 cases are reported every year since the 1970s.[1]
Age
There is no age predilection for diphyllobothriasis.
Gender
There is no gender predilection for diphyllobothriasis.
Race
There is no racial predilection for diphyllobothriasis.
Developed Countries
It is endemic in Japan and Russia. Sporadic cases are reported in Europe and America.[1]
Developing Countries
Sporadic cases are reported in the developing countries of Asia. NO reports are present to suggest the presence of diphyllobothriasis in Africa.[1]