热带病与寄生虫学 ›› 2023, Vol. 21 ›› Issue (4): 228-231.doi: 10.3969/j.issn.1672-2302.2023.04.011

• 调查研究 • 上一篇    下一篇

2020—2022年池州市贵池区野鼠血吸虫感染调查结果分析

戴建军(), 刘泽祥, 陈县, 柯永文, 龙道胜, 慈胜利   

  1. 贵池区血吸虫病防治站,安徽 池州 247100
  • 收稿日期:2023-03-22 出版日期:2023-08-20 发布日期:2023-08-23
  • 作者简介:戴建军,男,本科,副主任医师,研究方向:血吸虫病防治。E-mail: 1486559796@qq.com

Investigation on the prevalence of Schistosoma japonicum infection in wild rats in Guichi District, Chizhou City from 2020 to 2022

DAI Jianjun(), LIU Zexiang, CHEN Xian, KE Yongwen, LONG Daosheng, CI Shengli   

  1. Shistosomiasis Control Station of Guichi District, Chizhou 247100, Anhui Province, China
  • Received:2023-03-22 Online:2023-08-20 Published:2023-08-23

摘要:

目的 了解池州市贵池区野鼠血吸虫感染情况,为制定或调整针对性的血吸虫病防治对策提供科学依据。方法 2020—2022年,根据贵池区既往血吸虫病疫情资料,结合流行类别和流行程度,每年抽取不少于10%的有螺流行村开展野鼠调查。采用夹夜法在有螺环境投放鼠夹,采取肝结节压片镜检、肠系膜静脉压片镜检、Kato-Katz法和毛蚴孵化法对捕获的野鼠进行平行检测,统计野鼠密度和血吸虫感染率等相关指标。结果 2020—2022年共调查流行村46个,累计捕获野鼠922只,野鼠密度为6.91%(922/13 346),野鼠血吸虫感染率为13.02%(120/922);不同年份野鼠密度分别为8.22%(245/2 982)、4.29%(217/5 058)和8.67%(460/5 306),野鼠血吸虫感染率分别为3.27%(8/245)、14.29%(31/217)和17.61%(81/460),差异均有统计学意义(χ2=87.426、29.455,P均<0.05)。山丘型地区野鼠密度为7.82%(589/7 534),野鼠血吸虫感染率为16.98%(100/589);湖沼型地区野鼠密度为5.73%(333/5 812),野鼠感染率为6.01%(20/333);两类地区野鼠密度和感染率差异均有统计学意义(χ2=22.904、22.398,P均<0.05)。捕获数量最多的是黑线姬鼠和黄毛鼠,血吸虫感染率分别为15.10%(69/457)和11.49%(40/348)。结论 贵池区山丘地区和湖沼地区均存在野鼠血吸虫感染情况,野鼠作为传染源的传播风险值得关注。

关键词: 血吸虫病, 野鼠, 动物传染源, 贵池区

Abstract:

Objective To understand the status of schistosomiasis infection in wild rats in Guichi District, Chizhou City, for scientific evidence to formulate targeted schistosomiasis control strategies. Methods By the data of schistosomiasis epidemic situation in history in Guichi District and combined with the epidemic category and prevalence degree, we conducted annual survey in the wild rats in at least 10% of the endemic villages between 2020 and 2022. The rats living in the areas with snails were captured with mousetrap, and underwent parallel testing using microscopy examination for liver nodule, microscopy examination for mesenteric vein, Kato-Katz method, and miracidium hatching method. The related indicators, including the density of wild rats and schistosome infection rate, were summed up. Results Forty-six epidemic villages were surveyed from 2020 to 2022, and a total of 922 wild rats were captured. The density of wild rats was 6.91% (922/13 346), and the infection rate was 13.02% (120/922). The density and infection rate in the wild rats was 8.22% (245/2 982), 4.29% (217/5 058), and 8.67% (460/5 306); 3.27% (8/245), 14.29% (31/217), and 17.61% (81/460), respectively, in different years, with statistical significance (χ2=87.426, 29.455; all P<0.05), and 7.82% (589/7 534) and 16.98% (100/589) in hilly areas, 5.73% (333/5 812) and 6.01% (20/333) in lake and marshland areas (χ2=22.904, 22.398; all P<0.05). The largest number of wild rats captured was associated with Apodemus agrarius and Rattus losea Swinhoe, and respectively 15.10% (69/457) and 11.49% (40/348) of them were infected with schistosome. Conclusion Schistosoma japonicum infection exists in the wild rats living in hilly and lake areas in Guichi District, and the transmission risk of wild rats as a source of infection deserves attention.

Key words: Schistosomiasis, Wild rat, Sources of animal infections, Guichi District

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