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Paragonimus westermani (Japanese lung fluke or oriental lung fluke) is the most common species of lung fluke that infects humans, causing paragonimiasis. [2]
Paragonimiasis is a food-borne parasitic disease caused by several species of lung flukes belonging to genus Paragonimus. [4] Infection is acquired by eating crustaceans such as crabs and crayfishes which host the infective forms called metacercariae, or by eating raw or undercooked meat of mammals harboring the metacercariae from crustaceans.
Paragonimus westermani Paragonimus is a genus of flukes ( trematodes ) and is the only genus in the monotypic family Paragonimidae . Some tens of species have been described, but they are difficult to distinguish, so it is not clear how many of the named species may be synonyms .
This is a shortened version of the fifteenth chapter of the ICD-9: Certain Conditions originating in the Perinatal Period. It covers ICD codes 760 to 779 . The full chapter can be found on pages 439 to 453 of Volume 1, which contains all (sub)categories of the ICD-9.
Paragonimiasis caused by infection with lung flukes, mostly of the species Paragonimus westermani [17] [18] Fasciolopsiasis caused by the giant intestinal fluke Fasciolopsis buski [19] Echinostomiasis caused by infection with intestinal flukes of the genus Echinostoma [citation needed]
Raw or undercooked meats are the major sources of Taenia (pork, beef and venison), Trichinella (pork and bear), Diphyllobothrium (fish), Clonorchis (fish), and Paragonimus (crustaceans). Schistosomes and nematodes such as hookworms (Ancylostoma and Necator) and Strongyloides can penetrate the skin directly. [20]
Of these, the most common cause of human paragonimiasis is Paragonimus westermani, the oriental lung fluke. [11] Lung flukes require three different hosts in order to complete their life cycle. The first intermediate host is a snail, the second intermediate host is a crab or crayfish, and the definitive host for lung flukes is an animal or ...
Max Braun in 1899 first defined the genus Paragonimus, which initially only included the species P. westermani. [5]In Vietnam, since paragonimiasis was first reported there in 1906, it was presumed for 89 years that only one species of Paragonimus lung fluke, P. westermani, caused paragonmiasis in humans. [6]