Abstract:

Objective: To investigate the intestinal ascarides infection in primary school students in Dali City, and to provide the basis for effective prevention and control strategies in the future. Methods: To investigate some pupils from Wenge Primary School (rural area) and Hehua Primary School （suburbs）. Ascaris eggs were detected by normal saline smear; and the infection rate of intestinal ascarids was statistically analyzed by Chi-square test. Results: The infection rate of Wenge Primary School was 10.10%, while that of Hehua Primary School was 1.96%. The infection rate in male was 6.80% and 5.10% in female. The infection rate in students from 5 to 8 years old was 10.11%, and 2.68% in students from 9 to 11 years old. Conclusion: The infection rate of intestinal ascarids in primary school students in Dali City is lower than the national infection rate. The infection rate in rural students is slightly higher than that in urban ones. And the infection rate in male and female has no significant difference. The infection rate in students from 5 to 8 years old is higher than those from 9 to 11 years old.

Key words: ascaris infection, primary school student, investigation, Dali City