关键词: 肾综合征出血热, 宿主动物, 汉坦病毒

Abstract:

Objective To get an insight into the species composition, distribution and virus-carrying condition of host animals in Xi'an of hemorrhagic fever with renal syndrome (HFRS) in 2012. Methods Night trapping method was used to capture murine-like animals, and their habitats were recorded, and extracted RNA and genotyping of Hantavirus(HV) carried by the animals, the differences in rodent density, and virus-carrying rate between different months were analyzed by using t -Test, and the differences of rodent density in different habitats were analyzed by using general linear models. Results There were 480 murine-like animals were captured belonging to 12 species/subspecies of 6 genus, 4 families, and 2 orders in 2012, the density of animals in the field (9.42%) was higher than in the populated area (3.93%) (F=4.555, P < 0.05). There were significant difference in rodent density and virus-carrying rate among different months(t=4.900, P < 0.05; t=5.894, P < 0.05). Animal density began to significantly increase from May, and reached its peak in August, and then drop after November. The virus-carrying rates of animal were 28.53% in the field and 0 in the populated area. Three species were virus - carrying animal, which were Apodemus agrarius, Mus musculus and Crocidura suaveolens. All the genotypes of 119 positive rodents belonged to typeⅠ (hantaan virus, HTNV). Among these positive rodents, A. agrarius accounted for 97.48%, and its virus-carrying rate was 31.52%. Conclusion Apodemus agrarius is still the main host species of virus which causes HFRS in Xi'an. Controlling density of field murine-like animals should be the key to prevent HFRS, and taking comprehensive measures for controlling animal density should begin in April.

Key words: Hemorrhagic fever with renal syndrome, Host animal, Hantavirus