3. Results Over a 3-month period, 3 590 elementary school students of 19 schools including 2 096 boys (58.4%) and 1 493 girls (41.6%) were examined. The mean age of these pupils was (8.68依1.58) years within the range of 6-12 years. The overall infestation rate in the studied population was 0.47%. The infestation rate among the girls and boys was 0.42% and 0.05%, respectively. The ratio of affliction in girls was 8 times higher than the boys and this difference was statistically significant (P=0.0001). The frequency rate of infestation to nit was 88.2%. Approximately, 17.8% of those afflicted carried live lice. About 1% of students in the girls’ schools and 0.1% of student in the boys’ schools were