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Parasitic infections of the gastrointestinal tract

机译：胃肠道的寄生虫感染

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Intestinal parasites continue to be a significant health problem in both developed and developing countries. In developed countries, protozoans are more commonly the cause of gastrointestinal infections than are helminths. Some protozoan parasites have stages in which, in addition to being resistant to chemicals used for water treatment, they are small enough to pass through commonly used filtration processes. The relatively large size of helminth eggs increases the likelihood of their removal during water filtration. The direct impact of protozoan parasites on both human and animal health is considerable, and there is some evidence that infection may contribute to the development of various forms of intestinal dysregulation as well as disseminated infection, especially in AIDS patients. Protozoans of special interest, due to either their frequency of isolation or their role as emerging pathogens, include Giardia duodenalis, Cryptosporidium parvum, Cyclospora cayetanensis, and the microsporidians, Enterocytozoon bieneusi and Encephalitozoon intestinalis.
机译：在发达国家和发展中国家，肠道寄生虫仍然是一个重要的健康问题。在发达国家，原生动物比蠕虫更常见是引起胃肠道感染的原因。一些原生动物寄生虫具有这样的阶段，其中除了对用于水处理的化学物质具有抵抗力外，它们还足够小，可以通过常用的过滤过程。蠕虫卵的相对较大尺寸增加了在水过滤过程中将其除去的可能性。原生动物寄生虫对人类和动物健康的直接影响是相当大的，并且有证据表明感染可能导致各种形式的肠道失调以及散发性感染的发展，特别是在艾滋病患者中。由于其分离频率或作为新兴病原体的作用，引起特别关注的原生动物包括贾第鞭毛虫，小隐孢子虫，cayetanensis和微孢子虫，Enterocytozoon bieneusi和Encephalitozoon小肠。

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