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Volume 42, Number 5, October 2009

 Current status of Enterobius vermicularis infection in primary schoolchildren in Miaoli County and Taichung County, Taiwan

Cheng-Chieh Wang, Yuan-Fang Lee, Chih-Cheng Chang, Nie-Sue Lee, Po-Yen Chen, Fang-Liang Huang, Nuo-Wei Liou

Received: June 10, 2008    Revised: July 15, 2008    Accepted: August 20, 2008   


Corresponding author:

 Dr. Nie-Sue Lee, No. 794, Jhongjheng Rd., Sinjhuang City, Taipei 242, Taiwan. Email:


Background and purpose: 

 No epidemiological survey of the prevalence of enterobius vermicularis infection in miaoli county and Taichung County has benn conducted. This epidemiological survey was performed to describe the profiile of E. vermicularis infection in schoolchildren in Miaoli county and Taichung County.



 The first part of this study was conducted between November 2005 and February 2006 in Miaoli County. 44,071 primary schoolchildren from 18 districts were examined by 2 consecutive-day adhesive cellophane perianal swabs to estimate the infection rate. The second part was performed between October 2006 and January 2007 in Taichung County. 24,382 primary schoolchildren from 14 districts were examined.



 In Miaoli County, the infection rate was 2.39% (1054/44,071). The infection rate was highest in the Taian (6.69%; 20/299), Shytarn (4.49%; 11/245), and Dahu townships (3.6%; 40/1111). In Taichung County, the infection rate was 2.95% (720/24,382). The infection rate was highest in the Da-an (5.46%; 26/476) and Heping townships (4.48%, 9/201). The infection rate for a family with  >= children was significantly higher than that for a family with <= children (p=0.007). The frequency of washing linen and cleaning bedclothes significantly affected the infection rate of enterobiasis (p<0.01). The efficacy rate for mebendazole was 96%, with no difference between 1 and 2 closes.



 The number of children per family and the frequency of washing linen and cleaning bedclothes were the most important factors for transmission of pinworm infection among the groups surveyed.


Key words:

 Child; Enterobiasis; Enterobius; Infection; Mebendazole; Schools