Uga S, Hoa N T V, Noda S, Moji K, Cong L, Aoki Y, Rai S K, Fujimaki Y
Department of Parasitology, Faculty of Health Sciences, Kobe University Graduate School of Health Sciences, Kobe, Japan.
Nepal Med Coll J. 2009 Jun;11(2):75-8.
Helminth egg contamination of vegetables purchased at suburban market in Hanoi, Vietnam was examined. A total of 317 vegetables were examined and 82 (26%) were revealed to be positive for parasite eggs. Of the 15 varieties, 13 were positive except for horseradish and cucumber. Contamination was highest in leafy vegetables (31%), followed by root vegetables (17%) and fruit vegetables (3%). Throughout the survey, five species of parasite eggs were found: Ascaris sp., Trichuris sp., Toxocara sp., Taenia sp. and Ascaridia galli. In the interview with the villagers, 121 (81%) of 149 adult villagers stated that they usually use not only animal feces but also human feces as a fertilizer. Throughout the survey, a total of 453 eggs were recovered. Number of eggs recovered from vegetables was higher in the dry season (355 eggs) than in the rainy season (98 eggs). The study revealed that vegetables purchased at a market in suburban Hanoi (Vietnam) were highly contaminated with parasite eggs excreted by humans and animals. Considering the eating habits of the Vietnamese and the 17% embryonation rate of detected parasites, vegetables seem to play an important role in soil-transmitted helminth infection in this country.
对在越南河内郊区市场购买的蔬菜的蠕虫卵污染情况进行了检查。共检查了317种蔬菜，其中82种（26%）被发现寄生虫卵呈阳性。在15个品种中，除辣根和黄瓜外，有13种呈阳性。叶菜类蔬菜的污染率最高（31%），其次是根菜类蔬菜（17%）和果菜类蔬菜（3%）。在整个调查过程中，发现了五种寄生虫卵：蛔虫属、鞭虫属、弓首蛔虫属、绦虫属和鸡蛔虫。在对村民的访谈中，149名成年村民中有121名（81%）表示，他们通常不仅使用动物粪便，还使用人类粪便作为肥料。在整个调查过程中，共回收了453枚虫卵。旱季从蔬菜中回收的虫卵数量（355枚）高于雨季（98枚）。该研究表明，在越南河内郊区市场购买的蔬菜受到人类和动物排出的寄生虫卵的高度污染。考虑到越南人的饮食习惯以及所检测寄生虫17%的胚胎发育率，蔬菜似乎在该国土壤传播的蠕虫感染中起着重要作用。
