开江县肾综合征出血热宿主动物调查研究

A STUDY FOR HOST ANIMALS OF HEMORRHAGIC FEVER WITH RENAL SYNDROME IN KAIJIANG COUNTY.

目的 :了解肾综合征出血热宿主动物的数量、种群构成及带毒状况。方法 :采用夜夹法对野外和室内进行小兽密度和种群调查 ;同时取肺作带毒调查 ;取猫、兔、羊等家畜血 (滤纸法 )作感染率调查。结果 :2 2年野外小兽密度为 4.2 1%～ 2 6 .5 7% ,平均为 11.31% ;13年室内小兽密度为 2 .92 %～ 9.47% ,平均为 6 .94%。野外以黑线姬鼠为主 (5 4.2 0 % ) ,次为褐家鼠 (2 2 .5 6 % ) ;室内以褐家鼠和小家鼠为主 ,分别占 6 3.36 %和 2 8.6 4%。小兽带毒率黑线姬鼠 2 .98% ,褐家鼠 2 .2 2 % ,小家鼠 2 .6 3% ,大足鼠 5 0 % ,中麝鼠句 2 .38% ;猫感染率为 8.33%。结论 :黑线姬鼠和褐家鼠为开江县肾综合征出血热的主要宿主动物和传染源 。

Objective:To study the number,species and HFRS virus distribution of hemorrhagic fever with renal syndrome host animals.Methods:The night rat clip method was applied to investigate densities and species of field and in door rodent.At the same time rodents lung tissue were test to investigate HFRS virus distribution.And blood sample of domestic animals such as cats,rabbits and goats were collected to test for investigating infection rates.Results:During the past 22 years,densities of field rodent were between 4 21% and 26 57%.While,densities of indoor rodent were between 2 92% and 9 47% during the past 13 years.Primary species in the field were apodemus agrarius(54 2%) and rattus norvegicus(22 56%).While in door primary species were fattus norvegicus(63 36%) and mus musculus(28 64%).Proportions of rodents who were with HFRS virus,including apodemus agrarius,rattus,rattus norvegicus,mus musculus,rattus nitidus and crocidura russula,respectively were 2 98%,2 22%,2 63%,50% and 2 38% The infection rate of cat was 8 33%.Conclusion:Apodemus agrarius and rattus norvegicus were the primary HFRS host and cats were important for spreading HFRS in Kaijiang County.