title: Role of water in the transmission of cyclosporiarsis in Sharkia Governorate, Egypt.
abstract: Water samples were collected form five residential areas in El-Ekhewa Village where the human populations use this water for daily activity and for consumption. These water sources were Bahr El-Baker drain, low running irrigation canal, underground water at shallow depth (3-8 m), finished piped water and underground water >35 m deep. The samples were concentrated by flocculation method and the concentrated pellets were examined by ultraviolet (UV) epifluorescence microscopy for Cyclospora oocysts. The densities of water contamination by 8-10 microm oocysts/liter in the five sources were respectively: 2400, 1900, 700, 200 and zero. This indicated that finished water was sewage contaminated. Stool samples from 109 diarrheal patients and 231 non-diarrheal ones from these areas were examined by the acid fast-trichrome stain, Saline Haemo De single slide trichrome stain and by standard bacteriologic techniques. Those with Cyclospora as single pathogen were considered (5.6%) of diarrheal and (2.3%) of the non-diarrheal individuals. The correlation between the density of water contamination and the prevalence of cyclosporiasis among the individuals of each area was significant. No doubt, water was the main vehicle of transmission in the present community. Soil contact and poultry were significant risk factors.
authors.affiliation: Department of Parasitology, Faculty of Medicine, Zagazig University, Zagazig.
authors.forename: Eman M N
authors.initials: EM
authors.lastname: el-Karamany
authors.forename: Tarik I
authors.initials: TI
authors.lastname: Zaher
authors.forename: Mamdouh M
authors.initials: MM
authors.lastname: el-Bahnasawy
mesh_terms: D000818:Animals; D021744:Cyclospora / Q000302:isolation & purification*; D021866:Cyclosporiasis / Q000453:epidemiology / Q000635:transmission*; D004534:Egypt / Q000453:epidemiology; D006801:Humans; D014867:Water / Q000469:parasitology*; D014881:Water Supply / Q000592:standards*
chemical_list: D014867:Water