Pediculosis capitis or head lice infestation is one of the most critical public health problems, primarily involving primary school children. Objectives: This study aimed to determine the prevalence of Pediculus capitis contamination among primary school students in the villages of Varzaqan city, East Azerbaijan province, Iran, in 2020. Methods: Overall, 400 primary school students aged 7 - 12 were selected through convenience sampling. First, a demographic checklist was filled out for each

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... icipant, and then hair examination was carried out individually and privately to detect head lice or eggs/nits. The data analysis was performed using descriptive (frequency and percentage) and analytical methods, including chi-square and t-tests (SPSS, version 16). A P-value of less than 0.05 was considered significant. Results: Of 400 students, 41 (10.3%) were infested with P. capitis. The prevalence rate significantly differed between boys (6.2%) and girls (14.8%). There was a significant association between pediculosis and mother's education, father's job, family income, history of infestation, number of combs per day, and frequency of hair washing per week. Conclusions: According to the prevalence of head lice in primary school children, we need to increase the awareness and train children, parents, and teachers through further cross-sectoral cooperation between education and health centers. Also, the presence of a hygiene teacher at school to improve the health status of students can significantly reduce the prevalence of pediculosis.