The Journal of

  Background :Diarrhea epidemic happens in most parts of the world especially in developing countries. Accordingly the present study was carried out aiming at surveying the impact of environmental factors on diarrhea incidence in Tangestan Township of Bushehr province in 2012.

  Method : In this study Case and Control groups were considered. The data were collected by distributing checklists. 262 subjects in the Case group with diarrheal disease together with 262 subjects in the control group filled out distributed checklists. Afterwards they were collected. Data analysis was performed by applying SPSS statistical software and by descriptive statistics and by Logistic regression test.

  Results : The mean age of the subjects was 24.71.17.7% of whom used reservoir for drinking water, 63.4% lived in rural areas, 66.8%of subjects used water alone in washing eating vegetables, 99.6% used healthy wastewater system, and 6.9% used unhealthy toilets. Logistic regression showed that these factors such as drinking water reservoir kind, food consumption menu and type of eating vegetable, and the presence of insect vectors in the living place increase the probability of diarrhea incidence in the case group 1.2,2.93,2.18 and 2.35more times, respectively ,in comparison to the control group.

  Conclusion : Due to the determinant role of the environment in diarrhea incidence especially during warm seasons, it is necessary toEstablish educational hygienist programs especially for those people who work in Food Procurement and Distribution and Chlorination of water sources can result in diarrhea control in Tangestan Township.