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Background and Objective: Cryptosporidium is a parasite with worldwide distribution, a significant cause of diarrhea in children and immunodeficient patients. In some country this parasite is either or fourth factor of diarrhea in children. In developing country the prevalence rate of disease is increased but because of specific method recognition in special survey, information about prevalence in our country isn’t completely available. Materials and Methods: From December to March in Zahedan, capital of Sistan and Baluchestan province, 528 patient referred to Ali-Asghar Hospital, parasitology center, in 25 cases of whom Cryptosporidium Parvium was detected (4.7%). Results: The prevalence rate of disease was more in the 1-2 age group. The infants who didn’t use mother milk were significantly more commonly infected and children in nursery school similarly more infected. The majority of cases were detected in summer and spring, although there was no significant relationship between season’s prevalence. Conclusion: Although some C.parvum cases harbored Giardia Lamblia, there was no relation between the two infections.

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Background & Objective: Giardiasis is one of the most prevalent human intestinal parasites, especially among children aged between 2 to 12 years old. In this study, the effects of Giardiasis on serological levels of Zinc and Iron elements were determined. Materials & Methods: A total of 100 children aged under 12 years who were admitted to the pediatric departments of hospitals affiliated to Mazandaran University with gastrointestinal complain, and diagnosed as having Giardiasis by stool examination (Direct and Formalin-ether technique and trichrome stain) in the parasitology department, were enrolled as the case group. The control group consisted of 100 age-matched healthy children. A questionnaire including age, physical growth status and clinical symptoms were completed. Serological levels of Zinc and Iron were measured by atomic absorption spectophotometer in all samples in Shilat of Mazandaran. Results: In this study, serum Iron levels were 67±25 µg/dl and 77±23 µg/dl and Zinc levels were 64±20 µg/dl and 96±23 µg/dl in case and control group, respectively. Statistical analysis showed significant differences between the serological levels of these elements, which was much higher in serum Iron levels (P<0.05). Conclusion: These results revealed those serological levels of Zinc and Iron decreased during Giardiasis due to malabsorption.