Department of Tropical Medicine and Parasitology, Seoul National University College of Medicine, and Institute of Endemic Diseases, Seoul National University Medical Research Center, Seoul 03080, Korea.
Chonbuk National University Medical School, Chonju 54907, Korea.
Korean J Parasitol. 2021 Apr;59(2):131-138. doi: 10.3347/kjp.2021.59.2.131. Epub 2021 Apr 22.
Helminth infections are prevalent in Lao People's Democratic Republic (Lao PDR). This study aimed at determining the prevalence and risk factors of intestinal helminthiasis in remote mountainous villages of northern Lao PDR. During the dry season in January 2017, a cross-sectional survey was conducted in 3 remote mountainous villages in Oudomxay province, Lao PDR. Villagers older than 18 years of age who agreed to submit stool samples or undergo an interview, were recruited. Stool samples from 198 individuals were examined by the Kato-Katz method, and a questionnaire surveyed 161 individuals among them. Univariable and multivariable logistic regression analyses were used to identify risk factors associated with the intestinal helminthiasis. An overall prevalence of intestinal helminthiasis was 75.8%. Hookworm infection was the most common (63.1%), followed by Opisthorchis viverrini/minute intestinal flukes (17.7%), Taenia spp. (15.2%), Trichuris trichiura (2.0%), Ascaris lumbricoides (1.5%), and Enterobius vermicularis (1.0%). Questionnaire analysis revealed sex (male) and absence of latrine to be significant risk factors for hookworm infection and consumption of raw meat for taeniasis. These results suggest that the mountainous area in northern Lao PDR has a different composition of helminth infections from other studies conducted in Lao PDR; a high prevalence of hookworm infection and taeniasis and low prevalence of T. trichiura and A. lumbricoides infections were observed. Also, liver flukes or intestinal flukes were similarly prevalent in the mountainous area.
在老挝人民民主共和国（老挝），寄生虫感染很普遍。本研究旨在确定老挝北部偏远山区村庄肠道寄生虫病的流行情况和危险因素。2017 年 1 月旱季期间，在老挝乌多姆赛省的 3 个偏远山村进行了横断面调查。同意提交粪便样本或接受访谈的 18 岁以上村民被招募。对 198 人的粪便样本进行了加藤厚涂片法检查，并对其中的 161 人进行了问卷调查。采用单变量和多变量逻辑回归分析来确定与肠道寄生虫病相关的危险因素。肠道寄生虫病的总流行率为 75.8%。钩虫感染最为常见（63.1%），其次是肝片吸虫/湄公血吸虫（17.7%）、带绦虫（15.2%）、鞭虫（2.0%）、蛔虫（1.5%）和蛲虫（1.0%）。问卷调查分析显示，男性和没有厕所是感染钩虫的显著危险因素，食用生肉是感染带绦虫的危险因素。这些结果表明，老挝北部山区的寄生虫感染构成与老挝其他研究不同；观察到钩虫感染和带绦虫感染的高流行率，而鞭虫和蛔虫感染的低流行率；肝吸虫或肠吸虫在山区同样流行。
