Prevalence of intestinal parasite infections on a national scale among primary schoolchildren in Laos
Prevalence of intestinal parasite infections on a national scale among primary schoolchildren in Laos
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DOI：
10.1007/s00436-003-0963-x
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发表时间：
2003-10-01
影响因子：
2
通讯作者：
Hoang, EH
中科院分区：
文献类型：
--
作者：
Rim, HJ;Chai, JY;Hoang, EH
为了调查老挝肠道寄生虫感染的流行病学情况，在全国范围内进行了寄生虫学调查，包括17个省和万象市。从2000年5月至2002年6月，共收集了29，846份小学生粪便标本，并采用玻璃纸厚涂片技术进行了一次检查。累计虫卵阳性率为61.9%。蛔虫占34.9%，钩虫占19.1%，鞭虫占25.8%，猫尾后睾吸虫占10.9%，带绦虫占10.9%，绦虫占10.9%，蛔虫占10.9%，钩虫占19.1%。0.6%和膜壳绦虫属（Hymenolepis spp.）百分之零点二北方山区，如丰沙里、华潘或赛松奔省，土壤传播蠕虫的流行率较高（超过70%）。湄公河沿着地区，如Khammuane、Saravane或Savannakhet省，显示出较高的鱼媒寄生虫流行率（超过20%）。另一方面，仅在以前流行的占巴塞省，在1.7%的学童中检测到曼氏血吸虫卵。流行率最高的是丰沙里省（96.0%），最低的是博利坎赛省（27.5%）。在Khammuane、万象、占巴塞省和万象市的451名6-8岁学童中，通过玻璃纸肛门拭子进行的另一项小规模调查发现35.7%的儿童体内有蛲虫卵。同时，钩虫感染儿童的平均血红蛋白水平并不低于未感染钩虫的儿童，这表明营养因素比寄生虫感染本身更重要。尽管如此，上述结果表明，有必要在全国范围内开展寄生虫控制项目，以降低该国寄生虫病可能造成的发病率。
In order to investigate the epidemiological situation of intestinal parasite infections in Laos, parasitological surveys were carried out on a national scale including 17 provinces and the Vientiane Municipality. A total of 29,846 stool specimens were collected from primary schoolchildren from May 2000 to June 2002 and examined once with the cellophane thick smear technique. The cumulative egg positive rate for intestinal helminths was 61.9%. By species, the rate for Ascaris lumbricoides was 34.9%, hookworm 19.1%, Trichuris trichiura 25.8%, Opisthorchis viverrini 10.9%, Taenia spp. 0.6% and Hymenolepis spp. 0.2%. The northern mountainous regions such as Phongsaly, Huaphan or Saysomboune Province showed a higher prevalence (over 70%) of soil- transmitted helminths. The regions along the Mekong River such as Khammuane, Saravane or Savannakhet Province showed a higher prevalence (over 20%) of fish-borne parasites. On the other hand, Schistosoma mansoni eggs were detected in 1.7% of schoolchildren only in Champassak Province, a previously endemic area. The highest prevalence was noted in Phongsaly Province (96.0%) and the lowest in Bolikhamxay Province (27.5%). An additional small-scale survey by cellophane anal swab detected Enterobius vermicularis eggs in 35.7% of 451 schoolchildren aged 6-8 years in Khammuane, Vientiane, Champassak Province and the Vientiane Municipality. Meanwhile, the mean blood haemoglobin level of hookworm-infected children was not lower than that of children not infected with hookworm, suggesting that nutritional factors are more important than parasite infection per se. Nevertheless, the above results indicate that a nationwide parasite control project is necessary to reduce possible morbidity due to parasitic diseases in the country