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目的 探讨青阳县山区流行性出血热疫源地概况。方法 分析基础资料 ,同时调查鼠密度和鼠种构成 ,用IFA法检测健康人群隐性感染情况和鼠血EHF·VIg、鼠肺组织中EHF·V抗原以及EHF·V分离。结果 山区野外鼠密度为 1 3 .6 % ,居民区鼠密度为 1 0 .7% ,山顶野外中华姬鼠为优势种 ,居民区黄胸鼠为优势种 ;山脚野外黑线姬鼠为绝对优势种 ,居民区褐家鼠为优势种。健康人群隐性感染率为 3 .7%。山顶野外鼠带毒率为 2 .3 % ,总感染率为 9.3 % ,山脚野外鼠带毒率为 7.4% ,总感染率为 7.4% ,居民区鼠带毒率为 6 .3 % ,总感染率为 8.3 % ,并在大足鼠阳性鼠肺中分离出一株EHF·V。结论 通过本次调查证实青阳县山区存在EHF疫源地 ,黑线姬鼠、社鼠、褐家鼠是主要传染源
Objective To investigate the epidemic situation of epidemic hemorrhagic fever in mountain area of Qingyang County. Methods The basal data were analyzed. The density of rodents and the composition of mice were also investigated. The latent infection of EHF · VIg and EHF · V antigen in EHF · V and the EHF · V of lung were detected by IFA. Results The density of rodents in the wild was 13.6% in the mountainous area, and the density in the residential area was 10.0%. The rodent Apodemus agrarius was the dominant species in the field and the dominant species in the residential area. Species, residential brown rodent dominant species. The latent infection rate in healthy population was 3.7%. The peak poisoning rate was 2.3% in the wilderness, 9.3% in the wild and 7.4% in the wild at the foot of the mountain. The total infection rate was 7.4% The rate was 8.3%, and one EHF · V was isolated from the rat pups of Dazu mice. Conclusion The investigation confirmed that there are EHF foci in the mountainous area of Qingyang County, Apodemus agrarius, social rats and Rattus norvegicus are the main source of infection