Surveillance results of host animals of hemorrhagic fever with renal syndrome in Jingzhou, Hubei province, China from 2017 to 2018

doi:10.11853/j.issn.1003.8280.2020.04.019

Abstract

Abstract: Objective To analyze the monitoring results of host animals of hemorrhagic fever with renal syndrome in Jingzhou, Hubei province, China from 2017 to 2018 for an understanding of the species, densities, and hantavirus-carrying situation of the host animals in the city. Methods From April to May (spring) of 2018 and from September to October (autumn) of 2017-2018, 1-2 villages each were selected from 8 counties (or cities/districts) of Jingzhou. Rodents were caught both indoors and in the field by the night trap method. The species of rodents were identified, and their lungs were taken for detection and classification of the nucleic acid of hantavirus by Real-time qPCR. Results From 2017 to 2018, the mean rodent density in Jingzhou was 7.02%, and the mean hantavirus-carrying rate was 13.37%. In spring, the indoor rodent density was 9.52%, and Mus musculus was the dominant species, among which no hantavirus was found; in the field, the highest density of 27.92% was in unharvested wheat fields, and Apodemus agrarius was the dominant species. The overall hantavirus-carrying rate was 12.64% in spring, and all the virus-positive A. agrarius rodents carried type I hantavirus and were captured in unharvested wheat fields. In autumn, the indoor density was 5.60%, and Rattus tanezumi was the dominant species, among which no hantavirus was found; in the field, the densities were higher in cabbage fields (12.33%), unharvested paddy fields (9.21%), and crayfish fields (5.99%), and A. agrarius was the dominant species. In autumn, the overall hantavirus-carrying rate was 13.62%; the virus-positive A. agrarius rodents carried type I hantavirus and were captured in cabbage fields and unharvested paddy fields; the virus-positive R. norvegicus carried type II hantavirus and were captured in crayfish fields and unharvested crayfish paddy fields. Conclusion In Jingzhou, the rodent density is relatively high in the indoor environment, where hantavirus is not detected; there are relatively high rodent densities and hantavirus-carrying rates in unharvested wheat fields during spring and in cabbage fields and unharvested paddy fields during autumn, and the virus-positive species are A. agrarius and R. norvegicus.

Key words: Hemorrhagic fever with renal syndrome, Host animal, Apodemus agrarius, Rattus norvegicus

摘要： 目的总结2017－2018年湖北省荆州市肾综合征出血热（HFRS）宿主动物监测结果，了解该市HFRS宿主动物种类、密度及带病毒情况。方法 2018年4－5月（春季）、2017和2018年的9－10月（秋季）在荆州市8个县（市、区）各选取1~2个自然村，采用夹夜法在室内及野外捕鼠。鉴定鼠种并取鼠肺，采用实时荧光定量PCR检测汉坦病毒核酸并分型。结果 2017－2018年荆州市平均鼠密度为7.02%，平均鼠带病毒率为13.37%。春季室内鼠密度为9.52%，小家鼠为优势鼠种，未发现携带汉坦病毒；野外以未收小麦田鼠密度较高（27.92%），黑线姬鼠为优势鼠种。春季总带病毒率为12.64%，阳性黑线姬鼠均在未收小麦田中捕获，携带Ⅰ型汉坦病毒。秋季室内鼠密度为5.60%，黄胸鼠为优势鼠种，未发现携带汉坦病毒；野外以包菜地（12.33%）、未收稻田（9.21%）、虾田（5.99%）鼠密度较高，黑线姬鼠为优势鼠种。秋季总带病毒率为13.62%，阳性黑线姬鼠在未收稻田、包菜地捕获，携带Ⅰ型汉坦病毒；阳性褐家鼠在未收虾稻田、虾田捕获，携带Ⅱ型汉坦病毒。结论荆州市室内生境鼠密度较高，但未检测到汉坦病毒；野外生境中，春季未收小麦田、秋季包菜地及未收稻田鼠密度、鼠带病毒率较高，阳性鼠为黑线姬鼠和褐家鼠。

关键词: 肾综合征出血热, 宿主动物, 黑线姬鼠, 褐家鼠

CLC Number:

LIU Tian, XIA Shi-guo, MEI Fang-sheng, HAO Hai-bo, NIE Xiao-pei, HUANG Ji-gui, YAO Meng-lei, LIU Li, YANG Rui, HU Bing, WU Yang, TONG Ye-qing, CHEN Qi. Surveillance results of host animals of hemorrhagic fever with renal syndrome in Jingzhou, Hubei province, China from 2017 to 2018[J]. Chines Journal of Vector Biology and Control, 2020, 31(4): 469-473.

刘天, 夏世国, 梅芳盛, 郝海波, 聂晓培, 黄继贵, 姚梦雷, 刘力, 杨瑞, 胡兵, 吴杨, 童叶青, 陈琦. 湖北省荆州市2017－2018年肾综合征出血热宿主动物监测结果分析[J]. 中国媒介生物学及控制杂志, 2020, 31(4): 469-473.

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