Liu Jian-feng, Jin Xiao-lin, Yang Kun, Xu Jin-shui, Qian Yi-xin, Yan Wei-an, Zha Xi, Ge Sang Zhuo Ga, Yuan Dan Wang Mu, Zhang Mei, Li Jin-hui, Yang Hai-tao
Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi. 2016 Oct;34(5):405-8.
To investigate the prevalence of parasitic infections in Lhasa, Tibet.
The residents in Chengguan District, Dangxiong County, Dazi County and Qushui County were selected to participate in the study in 2014, using the stratified random sampling method. Infections with the soil-borne nematodes in feces were examined in triplicates using the Kato-Katz method. Further, the Enterobius vermicularis were examined using the cellophane anal swab method in children aged 3-12 years, and the intestinal protozoa were detected by iodine staining. The parasitic infection was analyzed by sex, age, and occupation. Comparisons were made using Chi-square test.
A total of 1 015 residents（39.3±18.2 years: age range, 1-89 years） participated in the study, including 391 males（38.6%） and 623 females（61.4%）. Two hundred and forty-nine participants were positive for parasitic infections, with an overall infection rate of 24.5%（249/1 015）. The infection rate was 21.7%（220/1 015） for Taenia sp., 0.2%（2/1 015） for Trichuris trichiura and E. vermicularis respectively, 4.1%（42/1 015） for Entamoeba coli, 0.4%（4/1 015） for Giardia lamblia, 0.2%（2/1 015） for Iodamoeba butschlii. No infection was found for other parasites. There was no significant sexual difference in the infection rate of Taenia (male 21.2%, 83/391; female 22.0%, 137/624), T. trichiura (male 0; female 0.3%, 2/624), E. vermicularis (male 0.3%, 2/391; female 0.2%, 1/624), E. coli (male 5.4%, 21/391; female 3.4%, 21/624), G. lamblia (male 0.8%, 3/391; female 0.2%, 1/624), or I. butschlii (male 0; female 0.3%, 2/624) (P>0.05). The Taenia sp. infection rate in the age groups of 0-17, 18-29, 30-39, 40-49, 50-59 and ≥ 60 years was 10.9%（18/165）, 14.0%（18/129）, 23.0%（43/187）, 25.3%（61/241）, 26.5%（41/155）, and 28.3%（39/138）, respectively, with significant differences between groups of 0-17 and 40-49 years and between groups of 50-59 and ≥ 60 years (P<0.01). The infection rate of E. coli, T. trichiura and I. butschlii was highest in the age group of 50-59 years（6.5%, 10/155; 0.7%, 1/155; 1.3%, 2/155 respectively）. Among various occupations, farmers showed the highest infection rate for Taenia（44.5%, 147/330）, E. coli（6.4%, 21/33）, E. vermicularis （0.6%, 2/330） and I. butschlii（0.3%, 1/330）; housewives had the highest infection rate for T. trichiura（2.5%, 1/40）; and the students had the highest infection rate for G. lamblia (0.7%, 1/134).
There are infections with various intestinal parasites in the participants of Lhasa City, among which taenia infection reaches 20.7% while others have a low level of infection.
调查西藏拉萨市寄生虫感染的流行情况。
2014年采用分层随机抽样方法，选取城关区、当雄县、达孜县和曲水县的居民参与本研究。粪便中土源性线虫感染采用改良加藤厚涂片法进行3次检查。此外，对3 - 12岁儿童采用透明胶纸肛拭法检查蛲虫，采用碘液染色法检测肠道原虫。按性别、年龄和职业分析寄生虫感染情况。采用卡方检验进行比较。
共有1015名居民（年龄39.3±18.2岁，范围1 - 89岁）参与本研究，其中男性391名（38.6%），女性623名（61.4%）。249名参与者寄生虫感染呈阳性，总体感染率为24.5%（249/1015）。带绦虫感染率为21.7%（220/1015），鞭虫和蛲虫感染率分别为0.2%（2/1015），结肠内阿米巴感染率为4.1%（42/1015），蓝氏贾第鞭毛虫感染率为0.4%（4/1015），布氏嗜碘阿米巴感染率为0.2%（2/1015）。未发现其他寄生虫感染。带绦虫、鞭虫、蛲虫、结肠内阿米巴、蓝氏贾第鞭毛虫和布氏嗜碘阿米巴的感染率在性别上无显著差异（P>0.05）。0 - 17岁、18 - 29岁、30 - 39岁、40 - 49岁、50 - 59岁和≥60岁年龄组的带绦虫感染率分别为10.9%（18/165）、14.0%（18/129）、23.0%（43/187）、25.3%（61/241）、26.5%（41/155）和28.3%（39/138），0 - 17岁与40 - 49岁组以及50 - 59岁与≥60岁组之间差异有统计学意义（P<0.01）。结肠内阿米巴、鞭虫和布氏嗜碘阿米巴在50 - 59岁年龄组感染率最高（分别为6.5%，10/155；0.7%，1/155；1.3%，2/155）。在不同职业中，农民的带绦虫（44.5%，147/330）、结肠内阿米巴（6.4%，21/33）、蛲虫（0.6%，2/330）和布氏嗜碘阿米巴（0.3%，1/330）感染率最高；家庭主妇的鞭虫感染率最高（2.5%，1/40）；学生的蓝氏贾第鞭毛虫感染率最高（0.7%，1/134）。
拉萨市参与调查的人群存在多种肠道寄生虫感染，其中带绦虫感染率达20.7%，其他寄生虫感染率较低。
