Chin J Schisto Control ›› 2017, Vol. 29 ›› Issue (4): 459-463.

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Investigation on epidemic status of clonorchiasis sinensis based on inpatients in Zhongshan City, China

WANG Man1*| LUO Le1| CHEN Xue-qin1| LI Lei1| FANG Yue-yi2   

  1. 1 Zhongshan Municipal Center for Disease Control and Prevention| Guangdong Province| Zhongshan 528403| China; 2 Guangdong Provincial Center for Disease Control and Prevention| China
  • Online:2017-08-28 Published:2017-08-28

中山市住院病人华支睾吸虫感染现状调查

王曼1*|罗乐1|陈雪琴1|李雷1|方悦怡2   

  1. 1 广东省中山市疾病预防控制中心(中山528403);2 广东省疾病预防控制中心
  • 作者简介:王曼|女|硕士研究生|副主任医师。研究方向:传染病和寄生虫病流行病学
  • 基金资助:
    中山市科技局医疗卫生重大专项(2015B1004)

Abstract: Objective To understand the prevalence and epidemiological features of clonorchiasis sinensis based on inpatients in Zhongshan City. Methods All of the 23 town hospitals in Zhongshan City were selected as the surveillance hospitals in 2016. Among the inpatients from those hospitals, those lived in the city longer than 6 months were selected as the surveillance subjects. The stool specimens of the subjects were collected and examined by the modified Kato?Katz thick smear method for the eggs of Clonorchis sinensis. The crude infection rates of C. sinensis of the subjects were standardized according to the age and sex compositions of the population in Zhongshan City, 2016. Meanwhile, the infection rates of the subjects from different towns and those combined with related clinical diseases were analyzed. Results A total of 2 667 people were included in the surveillance, among which 219 were tested as positives, with a crude infection rate of 8.21%. For the positives, the male accounted for 81.74% (179/219), and their age ranged from 4 to 89 years with the mean value of (62.20±13.80) years. After standardization by age and sex composition, the infection rate was 3.62% for the whole population, the rates of the male and the female were 5.46% and 1.53%, respectively, and the former was 3.57 times as high as the latter. Both the infection rates of the male and the female rose as the age increasing ([χ2]male = 99.91, [χ2]female = 16.51, both P < 0.01). The standardized infection rates among the subjects in different towns ranged from 0 to 10.40%, and the rates in the north towns were higher than those in the south towns. The standardized rate was 9.22% for the subjects combined with gallstone, 3.40% for those not combined with gallstone, and the former was 2.71 times as high as that of the latter. Conclusion The people aged 30 years and above, with gallstone or living in towns with high C. sinensis infection rates are the key population for prevention and control of clonorchiasis in Zhongshan City.

Key words: Clonorchis sinensis; Infection rate; Inpatient; Epidemiological investigation; Zhongshan City

摘要: 目的 以调查住院病人为基础了解中山市华支睾吸虫感染状况和流行特征。方法 2016年,以中山市23个镇区医院作为监测医院,以监测医院住院病人中在中山市居住时间超过6个月者作为监测对象,采集其粪便标本,采用改良加藤厚涂片法检查华支睾吸虫虫卵,根据中山市2016年常住人口年龄和性别构成对调查得到的华支睾吸虫感染率进行标化,对不同镇区及合并相关疾病者感染率进行分析。结果 共2 667人纳入监测,镜检阳性219人,感染率为8.21%。镜检阳性人群中,男性179例,占81.74%;年龄最小4岁,最大89岁,平均(62.20 ± 13.80)岁。经年龄和性别标化后,中山市全人群感染率为3.62%,其中男性感染率为5.46%,女性为1.53%,男性是女性的3.57倍。男、女性均呈现出年龄越大感染率越高的趋势([χ2]男性 = 99.91、[χ2]女性 = 16.51,P均 < 0.01)。镇区标化感染率最高为10.40%,最低为0,呈北高南低的特征。胆结石病人标化感染率为9.22%,非胆结石病人为3.40%,前者是后者的2.71倍。结论 30岁以上、患有胆结石及居住于高感染率镇区者是中山市华支睾吸虫病防控的重点人群。

关键词: 华支睾吸虫;感染率;住院病人;流行病学调查;中山市

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