بررسي ارتباط شيوع همزمان Blastocystis hominis در افراد مبتلا به ژيارديازيس در شهرستان تنكابن استان مازندران

Simultaneous prevalence of Blastocystis hominis in patients with Giardiasis from Tonekabon city, Mazandaran Province, Iran

Giardiasis is one of the parasitic diseases with gastroenteritis caused by unicellular Giardia lamblia. Infection is occurred mainly by contaminated water, food or raw vegetables with cysts which are excreted by human source. Blastocystis hominis is a micro-organism living in human large intestine and may lead to variable gastroenteritis. High humidity, ecological conditions, superficial water, domestic and industrial animal husbandry and the rate of raining made Tonekabon city as specific and Mazandaran as a Province for transmission of parasitic diseases. In this study, simultaneous prevalence of Blastocystis hominis in patients with Giardiasis was investigated between 2007 to 2008 in Tonekabon city, which is located in western part of Mazandaran Province, Northern Iran. Overall, 226 stool samples of gastroenteritic patients were collected, fixed and examined by Direct Method (DM) and concentration with Paraseb Kit for diagnosis of enteropathogenic parasites. The results confirmed the prevalence rates of G. lamblia and Blastocystis hominis among patients with gastroenteritis were 3.54% and 3.1% respectively; however coinfection of both micro¬organisms was observed in 66.7% of them simultaneously. It is indicated here, simultaneous co-infections of G. lamblia with B. hominis may facilitate reproduction of Blastocystis and increase pathogenesis of Giardiasis in infected patients.