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Changing patterns in intestinal parasitic infections among Southeast Asian laborers in Taiwan

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Abstract

In order to determine whether there are changing patterns in intestinal parasitic infections among foreign laborers in North Taiwan, one fecal specimen was obtained from each of 1,569 laborers and examined by the formalin-ethyl acetate sedimentation technique. The prevalence of intestinal parasitic infections was 8.2%. Females (11.7%) had a significantly higher prevalence than males (6.9%), although there was no significant difference between Filipinos (7.7%), Thais (8.3%) and Indonesians (12.5%). Blastocystis hominis (3.4%) had the highest prevalence among the nine species of parasites detected. The significantly higher prevalence of B. hominis in the entry examination indicates an increasing trend in incoming Southeast Asian laborers. In addition, the prevalence of soil-transmitted helminth infections has become extremely low. Female laborers had a significantly higher positive rate. Although Opisthorchis viverrini/Clonorchis sinensis remains prevalent among Thais, the positive rate was also significantly reduced. These epidemiological patterns are different from those observed in previous studies and may be attributed to the long-term and constant movement of the foreign laborers.

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Acknowledgements

This study was supported in part by the Research and Development Program, Department of Health, Executive Yuan, R.O.C. (Grant No. DOH88-TD-1017) and the Chang-Gung Medical Research Program (CMRP511). The author wishes to thank Dr. Huey-Shinn Cheng, Department of Internal Medicine and Mr. Chin-Tang Teng and Ms. Shao-Wen Chao, Department of Clinical Pathology, Chang-Gung Memorial Hospital; and Dr. Tsu-Pang Fu, Department of Family Medicine and Mr. Chi-Wen Liu, Department of Laboratory Medicine, Ming-Sheng Hospital for their co-operation in collecting specimens. Special appreciation is also due to Miss Chin-Yi Wang and Hsin-Yi Wang for their valuable technical assistance.

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  1. Department of Parasitology, College of Medicine, Chang-Gung University, Kwei-San, Tao-Yuan, Taiwan

    Lian-Chen Wang

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  1. Lian-Chen Wang
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Correspondence to Lian-Chen Wang.

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Wang, LC. Changing patterns in intestinal parasitic infections among Southeast Asian laborers in Taiwan. Parasitol Res 92, 18–21 (2004). https://doi.org/10.1007/s00436-003-1013-4

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