An analysis of surveillance results of intermediate hosts of Paragonimus in Xiuning County, Anhui Province, China, 2019-2021

doi:10.11853/j.issn.1003.8280.2023.05.006

Abstract

Abstract: Objective To investigate the status of Paragonimus infection in intermediate hosts in Xiuning County, Anhui Province, China, so as to provide scientific evidence for formulating paragonimiasis control strategies.Methods From 2019 to 2021, small freshwater snails and crabs were captured in nine administrative villages in three towns along Xiuning river, Heng river, and Shuaishui river in Xiuning County. The freshwater snails and crabs were morphologically identified, and then were examined for Paragonimus cercariae and metacercariae, respectively. The metacercaria infection index of crabs was calculated to determine the levels of paragonimiasis epidemic foci. EpiData 3.1 and SPSS 23.0 were used for statistical analysis.Results Two kinds of small freshwater snails were collected, which were morphologically identified as Assiminea sp. and Semisulcospira libertina. Among a total of 3 826 Assiminea snails, no Paragonimus cercariae were detected. Among a total of 10 440 S. libertina snails, the overall infection rate was 0.89% (93/10 440); the infection rate was highest in Ru village (23/1 021, 2.25%) and lowest in Yanjiao village (4/743, 0.54%), with a statistical difference in the infection rate between the surveyed points (χ²=24.784, P=0.002). The crabs were identified as Sinopotamon yangtsekiense, and the overall infection rate was 21.41% (106/495). The infection rate of the crabs was highest in Ru village (25/76, 32.89%) and lowest in Yanjiao village (3/51, 5.88%), with a statistical difference between the surveyed points (χ²=16.225, P=0.039). The metacercaria infection index results of Ru village, Nantang village, and Jiangtan village were 0.12, 0.02, and 0.03, respectively, all being level-Ⅲ epidemic foci of paragonimiasis.Conclusions The intermediate hosts of Paragonimus in Xiuning County had a relatively high infection rate. Public health education on paragonimiasis should be strengthened to prevent the epidemic of paragonimiasis in this area.

Key words: Paragonimus, Intermediate host, Surveillance

摘要： 目的了解安徽省休宁县并殖吸虫中间宿主感染情况,为并殖吸虫病防治措施的制定提供依据。方法2019－2021年分别在休宁县休宁河、横江及率水河水系3个乡镇的9个行政村捕获小型淡水螺和溪蟹,形态学鉴定后,分别检测淡水螺体内并殖吸虫尾蚴和溪蟹体内囊蚴感染情况。计算溪蟹囊蚴感染指数,明确并殖吸虫病疫源地等级。应用EpiData 3.1和SPSS 23.0软件,对监测数据进行统计分析。结果共采集到2种小型淡水螺,经形态学鉴定为拟沼螺和放逸短沟蜷,检测拟沼螺3 826只,未发现并殖吸虫尾蚴。检测放逸短沟蜷10 440只,总感染率为0.89%（93/10 440）,其中儒村感染率最高,为2.25%（23/1 021）,岩角村感染率最低,为0.54%（4/743）,各调查点间感染率的差异有统计学意义（χ²=24.784,P=0.002）。溪蟹经形态学鉴定为长江华溪蟹,总感染率为21.41%（106/495）,儒村感染率最高,为32.89%（25/76）,岩角村感染率最低,为5.88%（3/51）,各调查点感染率的差异有统计学意义（χ²=16.225,P=0.039）。儒村、南塘村和江潭村囊蚴感染指数分别为0.12、0.02和0.03,为并殖吸虫病Ⅲ级疫源地。结论安徽省休宁县并殖吸虫中间宿主感染率较高,应加强并殖吸虫病防治知识的宣传,防止并殖吸虫病的流行。

关键词: 并殖吸虫, 中间宿主, 监测

CLC Number:

LIU Dao-hua, JIN Yu, LI Qi-yang, YANG Rong-sheng, WANG Tian-ping, CAO Zhi-guo. An analysis of surveillance results of intermediate hosts of Paragonimus in Xiuning County, Anhui Province, China, 2019-2021[J]. Chinese Journal of Vector Biology and Control, 2023, 34(5): 617-621.

刘道华, 金郁, 李启扬, 杨荣笙, 汪天平, 操治国. 安徽省休宁县2019－2021年并殖吸虫中间宿主监测结果分析[J]. 中国媒介生物学及控制杂志, 2023, 34(5): 617-621.

References

[1] Coordinating Office of the National Survey on the Important Human Parasitic Diseases. A national survey on current status of the important parasitic diseases in human population[J]. Chin J Parasitol Parasit Dis,2005,23 Suppl 1:S332-340. DOI:10.3969/j.issn.1000-7423.2005.z1.004.（in Chinese）全国人体重要寄生虫病现状调查办公室. 全国人体重要寄生虫病现状调查报告[J]. 中国寄生虫学与寄生虫病杂志,2005,23增刊1:332-340. DOI:10.3969/j.issn.1000-7423.2005.z1.004.
[2] Du YM,Xu XO. Epidemiological survey of paragonimiasis in southern Anhui province[J]. Anhui J Prev Med,1996,2（4）:46-47. （in Chinese）杜义木,徐筱鸥. 皖南地区肺吸虫病流行病学调查概况[J]. 安徽预防医学杂志,1996,2（4）:46-47.
[3] Liu YY,Zhang WZ,Wang YX. Medical malacology[M]. Beijing:China Ocean Press,1993:24-75. （in Chinese）刘月英,张文珍,王耀先. 医学贝类学[M]. 北京:海洋出版社,1993:24-75.
[4] Dai AY. Fauna Sinica （Arthropoda,Crustacea,Decapoda,Brachionidae,Stream Potamidae）[M]. Beijing:Science Press,1999:125-143. （in Chinese）戴爱云. 中国动物志.节肢动物门.甲壳动物亚门.软甲纲.十足目.束腹蟹科.溪蟹科[M]. 北京:科学出版社,1999:125-143.
[5] Liu RZ. Two examining methods for cerdcaria of Paragonimus westerman from its snail-host,Semisulcospira libertina[J]. Acta Parasitol Med Entomol Sin,2000,7（1）:63-64. DOI:10.3969/j.issn.1005-0507.2000.01.013.（in Chinese）刘锐中. 从放逸短沟蜷螺检查卫氏肺吸虫尾蚴的两种方法[J]. 寄生虫与医学昆虫学报,2000,7（1）:63-64. DOI:10.3969/j.issn.1005-0507.2000.01.013.
[6] Guo JD,Li QY,Ji H,et al. Investigation of Paragonimus and its intermediate host in two counties of Anhui southern mountain area[J]. J Trop Dis Parasitol,2005,3（3）:163,165. DOI:10.3969/j.issn.1672-2302.2005.03.014.（in Chinese）郭见多,李启扬,季虹,等. 皖南山区两县肺吸虫及其中间宿主的调查[J]. 热带病与寄生虫学,2005,3（3）:163,165. DOI:10.3969/j.issn.1672-2302.2005.03.014.
[7] Fan PF,Liu JR,Chen DX,et al. Distribution of Paragonimus westermani in southern Anhui[J]. J Bengbu Med Coll,1980（2）:1-6. （in Chinese）樊培方,刘家荣,陈黛霞,等. 安徽南部卫氏并殖吸虫分布[J]. 蚌埠医学院学报,1980（2）:1-6.
[8] Wan YF,Yang ZX,Zhou BJ. The comparison of Potamon chinghungense’s natural infection in Jinghong city,Yunnan province around 25 years[J]. Chin J Zoonoses,2011,27（3）:266-267. DOI:10.3969/j.issn.1002-2694.2011.03.023. （in Chinese）万雅芳,杨振兴,周本江. 云南省景洪市25年前后溪蟹感染并殖吸虫的比较[J]. 中国人兽共患病学报,2011,27（3）:266-267. DOI:10.3969/j.issn.1002-2694.2011.03.023.
[9] Liu YY,Zhang WZ,Wang YX,et al. Eight new species of freshwater molluscs in southwest China （Gastropoda:Bivalvia）[J]. Acta Zootax Sin,1994,19（1）:25-36. （in Chinese）刘月英,张文珍,王耀先,等. 中国西南地区淡水贝类八新种记述（腹足纲:瓣鳃纲）[J]. 动物分类学报,1994,19（1）:25-36.
[10] Li RZ,Chen L,Xu L,et al. Surveillance results of paragonimiasis in Sichuan province from 2015 to 2020[J]. J Prev Med Inf,2022,38（11）:1435-1440. （in Chinese）李荣智,陈琳,徐亮,等. 2015－2020年四川省并殖吸虫病监测结果分析[J]. 预防医学情报杂志,2022,38（11）:1435-1440.
[11] Huang YM. A survey of mollusca in Wuyishan nature reserve and its adjacent area[J]. Wuyi Sci J,1986,6:267-270. （in Chinese）黄一鸣. 武夷山自然保护区及其邻近地区贝类调查[J]. 武夷科学,1986,6:267-270.
[12] Zheng D,Lin CX,Cai WW,et al. Investigation on the first intermediate host of Paragonimus and its cercaria infection in Pingnan county,Fujian province[J]. J Trop Dis Parasitol,2021,19（5）:266-269. DOI:10.3969/j.issn.1672-2302.2021.05.007.（in Chinese）郑丹,林陈鑫,蔡武卫,等. 福建省屏南县并殖吸虫第一中间宿主及其尾蚴感染情况调查[J]. 热带病与寄生虫学,2021,19（5）:266-269. DOI:10.3969/j.issn.1672-2302.2021.05.007.
[13] Zhao TP,Lu YY,Shen HX,et al. Frenshwater snails and crabs infected with Paragonimus in northern suburban of Guangzhou[J]. J Trop Med,2014,14（4）:510-512. （in Chinese）赵太平,陆予云,沈浩贤,等. 广州北部山区螺种、蟹类及其感染并殖吸虫的调查[J]. 热带医学杂志,2014,14（4）:510-512.
[14] Liu DH,Guo JD,Wang TP,et al. Analysis of the results of paragonimiasis endemic in regular surveillance site in Anhui province from 2013 to 2016[J]. J Trop Dis Parasitol,2017,15（3）:155-158. （in Chinese）刘道华,郭见多,汪天平,等. 2013－2016年安徽省并殖吸虫病监测结果分析[J]. 热带病与寄生虫学,2017,15（3）:155-158.
[15] Zhang LS,Li TT,Zhang SQ,et al. Investigation on Paragonimus infection status in Xiuning county,Anhui province[J]. J Trop Dis Parasitol,2021,19（6）:325-328. DOI:10.3969/j.issn.1672-2302.2021.06.008.（in Chinese）章乐生,李婷婷,张世清,等. 安徽省休宁县并殖吸虫感染情况调查[J]. 热带病与寄生虫学,2021,19（6）:325-328. DOI:10.3969/j.issn.1672-2302.2021.06.008.
[16] Jiang DW,Xie HG,Lin CX,et al. Investigation on the second intermediate host of Paragonimus and its infection in some areas of Minjiang river basin[J]. J Trop Dis Parasitol,2022,20（5）:245-248. DOI:10.3969/j.issn.1672-2302.2022.05.002.（in Chinese）江典伟,谢汉国,林陈鑫,等. 闽江流域部分地区并殖吸虫第二中间宿主溪蟹感染情况调查[J]. 热带病与寄生虫学,2022,20（5）:245-248. DOI:10.3969/j.issn.1672-2302.2022.05.002.
[17] Zou JX,Wang Y,Liu DR,et al. Preliminary study of distribution of Sinopotamon （Crustacea,Decapoda,Potamidae） from China Mainland[J]. J Nanchang Univ:Nat Sci,2013,37（5）:485-490. （in Chinese）邹节新,汪雁,刘大仁,等. 中国大陆华溪蟹属淡水蟹类分布的区域分异[J]. 南昌大学学报:理科版,2013,37（5）:485-490.
[18] Chen JQ,Liu SH,Luo J,et al. Investigation on freshwater crab populations and Paragonimus infections in the Minjiang river basin along the middle section of Wuyi Mountain[J]. Chin J Schisto Control,2021,33（6）:590-599. DOI:10.16250/j.32.1374.2021154.（in Chinese）陈及清,刘时汉,罗鋆,等. 武夷山中段闽江流域淡水蟹类种群及并殖吸虫感染调查[J]. 中国血吸虫病防治杂志,2021,33（6）:590-599. DOI:10.16250/j.32.1374.2021154.
[19] Wang W,Wang XL,Wang ZC,et al. Survey of infection of intermidiate host of lung fluke in a mountainous region of the south Anhui[J].J Trop Dis Parasitol,1999,28（4）:224-225. DOI:10.3969/j.issn.1672-2302.1999.04.011.（in Chinese）王维,汪学龙,王志成,等. 皖南山区肺吸虫中间宿主感染情况调查[J]. 热带病与寄生虫学,1999,28（4）:224-225. DOI:10.3969/j.issn.1672-2302.1999.04.011.
[20] Luo J,Chen JQ,Jiang DW,et al. Intermediate host population and infection status of Paragonimus in southeastern Youxi county,Fujian province[J]. Chin J Parasitol Parasit Dis,2021,39（5）:646-651. DOI:10.12140/j.issn.1000-7423.2021.05.022.（in Chinese）罗鋆,陈及清,江典伟,等. 福建省尤溪县东南部并殖吸虫中间宿主种群及其感染情况[J]. 中国寄生虫学与寄生虫病杂志,2021,39（5）:646-651. DOI:10.12140/j.issn.1000-7423. 2021.05.022.
[21] Zhang J,Xia J,Zhang HX,et al. Surveillance on Paragonimus infection in Hubei province from 2018 to 2020[J]. Chin J Parasitol Parasit Dis,2021,39（5）:600-605. DOI:10.12140/j.issn.1000-7423.2021.05.006.（in Chinese）张娟,夏菁,张华勋,等. 2018－2020年湖北省并殖吸虫感染监测结果分析[J]. 中国寄生虫学与寄生虫病杂志,2021,39（5）:600-605. DOI:10.12140/j.issn.1000-7423.2021.05.006.
[22] Li YX,Ai L,Deng Y,et al. Epidemiological investigation of paragonimiasis epidemic focus in Luoyang city of Henan province[J]. Chin J Parasitol Parasit Dis,2020,38（5）:664-666. DOI:10.12140/j.issn.1000-7423.2020.05.023.（in Chinese）李云霞,艾琳,邓艳,等. 河南省洛阳市并殖吸虫病疫源地流行病学调查[J]. 中国寄生虫学与寄生虫病杂志,2020,38（5）:664-666. DOI:10.12140/j.issn.1000-7423.2020.05.023.
[23] Fan PF,Chen DX,Zhang ZH,et al. Studies on the metacercaria and adults of Paragonimus westermani in southern Anhui[J]. Acta Zool Sin,1979,25（4）:347-352. （in Chinese）樊培方,陈黛霞,张子和,等. 安徽南部卫氏并殖吸虫囊蚴和成虫研究[J]. 动物学报,1979,25（4）:347-352.