Head louse infestation rate in primary school students town - ship sari 1376-1377

Background and Regarding the rile of lice in the transmision of different diseases, and also as an important agent of defermining the level of hyegine in the society. This research was carried out in the primary schools of Sari township in the year 1376-1377. After coardination with the education organization of Sari city, the samples were selected randomly from 472 primary school, considering the gender of the students, the number of rural schools, clusfer stratifying, and all the students were examined for infestation to louse the hairs of head, back neck and car nearby to see the larva, nymph or matured louse in case of observing any of the above the case was considered as infested, and the questionaree was filled, also from each classes the norinfested students with the same number of infested students were selected randomly a confoar group, and the questionaree filled for them. The data were compare of with cy square and Z analysis. Out of 10991 students selected in this study, 215 (1.9 %) persons were infected in pedicolusis, the rate of infection was 1.2 % in city and 3.7% in villages. Infection in girls school was 3.7% and in boys schools was 0.5%. also there was a statestically significant difference between infection and variations such as health instructor, father occupation, parents education and common use of prirate belongings. And there was no statistically significant difference between infection, bathing or level of education. Based on the finding of the research it is concluded that, the rate of infection in rural area is three times more than urban area, and, that the rate of infection in girls is seven times more than boys. Regarding the obtained results from the variation trials of methods and materials, it was found that education of parents, father’s occupation, presence of instructor, common use of private belongings individual hyegine, play important role in acguiring infection in students