Deng Yan, Chen Wei-qi, Zhang Ya-lan, Lin Xi-meng, Zhang Hong-wei, Xu Bian-li
Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi. 2016 Dec;34(6):533-6.
To understand the endemic situation of soil-transmitted nematodiasis (Ascaris lumbricoides, Trichuris trichiura and Ancylostoma sp.) in Huaiyang County, Henan Province. Over 1 000 fecal samples from inhabitants in Huaiyang County of Henan Province were collected each year during 2011-2015, in which the soil-transmitted nematodes eggs and other intestinal helminth eggs were examined by Kato-Katz technique. The helminth-positive samples were examined by filter paper culture method to identify the species of hookworm. The cellophane swab method was used to detect Enterobius vermicularis eggs in children aged 3～12 years. Soil samples were collected from vegetable field, lavatory, courtyard and kitchen of 10 families randomly selected in each year to examine Ascaris eggs by a modified saturated sodium nitrate floatation method. In 2011-2015, 5 229 people were examined and 54 person infected with intestinal helminths were found. Five intestinal helminthes, A. lumbricoides, T. trichiura, Ancylostoma duodenale, Enterobius vermicularis and Trichostrongylus orientalis were found with 13, 2, 9, 29 and 1 infection person respectively. All showed mild infection and no multiple infections were found. There was no significant difference between the year 2015 which had the highest soil-transmitted nematode infection rate 0.6%（7/1 134） and the year 2013 which had the lowest infection rate 0.3%（3/1 037）（P>0.05）. The infection rate of intestinal helminths was highest in group of <10 years（2.8%, 25/905）, followed by the groups of >70 years（1.6%, 4/256） and 30～40 years（1.2%, 8/671）（P>0.05）. The average infection rate of E. vermicularis was 1.8%（18/993） The infection rate of E. vermicularis was relatively higher in kindergarten kids（1.6%, 6/366） and students（1.3%, 13/1 005） than that in farmers（0.3%, 10/3 782）（P<0.01）. No Ascaris eggs were found in the 200 randomly collected soil samples. The intestinal helminth infection status maintaines at low level in Henan Province during 2011-2015.
了解河南省淮阳县土源性线虫病（蛔虫、鞭虫和钩虫）的流行状况。2011 - 2015年期间，每年收集河南省淮阳县1000余份居民粪便样本，采用改良加藤厚涂片法检查土源性线虫卵及其他肠道蠕虫虫卵。对蠕虫阳性样本采用滤纸培养法鉴定钩虫种类。采用透明胶纸法检测3～12岁儿童蛲虫卵。每年随机抽取10户家庭的菜地、厕所、庭院和厨房土壤样本，采用改良饱和硝酸钠漂浮法检查蛔虫卵。2011 - 2015年，共检查5229人，发现肠道蠕虫感染者54人。检出蛔虫、鞭虫、十二指肠钩虫、蛲虫和东方毛圆线虫5种肠道蠕虫，感染人数分别为13、2、9、29和1人。均为轻度感染，未发现多重感染。土源性线虫感染率最高的2015年为0.6%（7/1134），最低的2013年为0.3%（3/1037），差异无统计学意义（P>0.05）。肠道蠕虫感染率<10岁组最高（2.8%，25/905），其次为>70岁组（1.6%，4/256）和30～40岁组（1.2%，8/671）（P>0.05）。蛲虫平均感染率为1.8%（18/993）。幼儿园儿童（1.6%，6/366）和学生（1.3%，13/1005）蛲虫感染率高于农民（0.3%，10/3782）（P<0.01）。随机采集的200份土壤样本中未发现蛔虫卵。2011 - 2015年河南省肠道蠕虫感染状况维持在较低水平。
