食品衛生における水系原虫感染症について

概要

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The epidemiology of waterborne protozoan infections is changing, there is a growing global public health concern with new and reemerging infectious diseases. The purpose of this article is to provide an introduction to the risk assessment for waterborne protozoa. The major protozoan species that affect humans are Cryptosporidium spp., Giardia spp., Entamoeba spp., Cyclospora spp., Isospora spp. The parasites are transmitted by ingestion of oocysts or cysts excreted in the feces of infected humans or animals, and/or in contaminated water or foods. The oocysts or cysts from these organisms are extremely robust, prevalent in source water supplies and capable of surviving in the environment for extended periods of time. We review the pathogenecity, biological feature of these protozoa and symptoms of patients. Furthermore, we describe about the detections of these organisms in various animals in Osaka, Japan, because the concern exists in the potential of zoonotic and waterborne transmission of some of these protozoa to human.
大阪夕陽丘学園短期大学の論文
2004-12-15