Volume 98, Issue 3
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



Intestinal parasitic infection rate among school-aged children in Thailand has been decreasing. However, certain intestinal parasites remain problematic in some regions. This cross-sectional study was conducted between February and September 2016 in three suburban government primary schools (KK, BR, and HK), Saraburi, Thailand. Stool was collected from 263 asymptomatic subjects (4–15 years old), using simple direct smear, formalin–ether concentration, Boeck and Drbohlav’s Locke–Egg–Serum (LES) medium culture, and agar plate culture. A self-administered questionnaire was used to collect data about lifestyle and socioeconomic status. The overall rate of intestinal parasites was 22.1% (15.6% single infection and 6.5% multiple infections). The helminths involving the digestive system found were (1.5%) and (0.4%). For protozoan infection, the major cause was (17.5%). The other protozoa included (4.6%), (3.4%), / (1.1%), and (0.8%). The sensitivity for the detection of increased with the LES culture technique. The infection rate of each organism was not significantly different among the three schools except for which showed the highest prevalence in the HK school ( = 0.001). This was correlated with the questionnaire results in which the HK school showed the highest risk of drinking contaminated water ( = 0.004). The present study emphasized the persistent problems of protozoan infections among suburban school-aged children. Lifestyle was still an important factor for intestinal parasitic infections among suburban school-aged Thai children in this study. Health education as well as routine surveillance was necessary to control the infections.


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  • Received : 24 Mar 2017
  • Accepted : 10 Dec 2017
  • Published online : 22 Jan 2018

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