Recovery of Cyclospora cayetanensis among asymptomatic rural Thai schoolchildren  

作　　者：K Thima H Mori R Praevanit S Mongkhonmu J Waikagul D Watthanakulpanich 

机构地区：[1]Department of Protozoology,Faculty of Tropical Medicine,Mahidol University [2]Bangkok School of Tropical Medicine,Mahidol University [3]Department of Helminthology,Faculty of Tropical Medicine,Mahidol University

出　　处：《Asian Pacific Journal of Tropical Medicine》2014年第2期119-123,共5页亚太热带医药杂志（英文版）

基　　金：partially supported by a grant from the Faculty of Tropical Medicine,Mahidol University

摘　　要：Objective:To obtain the prevalence with clinical symptoms of Cyclospora cayetanensis(C.cayetanensis),a coceidian protozoan parasite,in Thailand which is the cause of an intestinal infection characterized by sporadic-to-frequent explosive diarrhea.Methods:In a field surveyconducted by the Faculty of Tropical Medicine.Mahidol Lniversity.as part of the existing parasite-control program,a total of 2 540 faecal samples from villagers in Nan Province,Thailand,were collected and examined to determine the prevalence and clinical characteristics of parasitic infections.Results:Twelve cases of C.cayetanensis infection were found duritig faecal examination of schoolchildren aged 5-12 years.None exhibited obvious clinical symptoms,especially evidence of diarrhea:5 of 12 had loose faeces,one reported frequent symptoms of abdominal discomfort,and another had pale conjunctiva with low hematocrit.The children were generally asymptomatic.Conclusions:This finding confirms a public-health issue with potentially serious consequences whereby children can be exposed to an environment contaminated with food-und water-borne transmitted oocysts,anil can hence become infected with C.cayetunensis.Objective:To obtain the prevalence with clinical symptoms of Cyclospora cayetanensis(C.cayetanensis),a coceidian protozoan parasite,in Thailand which is the cause of an intestinal infection characterized by sporadic-to-frequent explosive diarrhea.Methods:In a field surveyconducted by the Faculty of Tropical Medicine.Mahidol Lniversity.as part of the existing parasite-control program,a total of 2 540 faecal samples from villagers in Nan Province,Thailand,were collected and examined to determine the prevalence and clinical characteristics of parasitic infections.Results:Twelve cases of C.cayetanensis infection were found duritig faecal examination of schoolchildren aged 5-12 years.None exhibited obvious clinical symptoms,especially evidence of diarrhea:5 of 12 had loose faeces,one reported frequent symptoms of abdominal discomfort,and another had pale conjunctiva with low hematocrit.The children were generally asymptomatic.Conclusions:This finding confirms a public-health issue with potentially serious consequences whereby children can be exposed to an environment contaminated with food-und water-borne transmitted oocysts,anil can hence become infected with C.cayetunensis.

关 键 词：CYCLOSPORA cayetanensis SCHOOLCHILDREN Carriers Traveler’s DIARRHEA 

分 类 号：R531.5[医药卫生—内科学]