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Entamoeba invadens
''Entamoeba invadens'' is a protozoan parasite of reptiles, within the genus ''Entamoeba''. It is closely related to the human parasite ''Entamoeba histolytica'', causing similar invasive disease in reptiles, in addition to a similar morphology and lifecycle.
==Disease and lifecycle==
''E. invadens'' is a causative agent of amoebiasis in reptiles, such as snakes and lizards. Reptile amoebiasis can be treated with metronidazole, an amoebicide drug.
''E. invadens'' is primarily transmitted via the ingestion of contaminated faeces, also known as the faecal-oral route. It has two distinct lifecycle stages. The first is a resistant cyst stage, which is transmitted outside of a host, and is also known as the infectious stage. The second is the motile trophozoite stage, which is released from the cyst following introduction into the host environment, and is the disease-causing (pathogenic) stage.〔
While there is no specialised intermediate vector stage, contaminated faeces can be transmitted to food sources by some arthropods (e.g. flies and cockroaches), where ''E. invadens'' may be ingested. Symptomless carriers of ''E. invadens'', such as crocodilians, may act as a reservoir of infection, particularly in captivity.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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