Objective To predict the prevalence trend of hemorrhagic fever with renal syndrome (HFRS) in Heilongjiang province, through monitoring of the epidemic situation of HFRS host animals from 2014 to 2016, and to provide a scientific basis for the development of prevention and control plans. Methods The trap-at-night method was used to catch rats from 10 monitoring points in fields and villages in Heilongjiang province from 2014 to 2016. Immunofluorescence assay was used to detect Hantavirus (HV) antigen in rodent lungs and HV antibody in rodent serum. Data and statistical analysis process by using Excel 2016 and SPSS 19.0 software. Results In Heilongjiang province from 2014 to 2016, 131 732 rodent clips were placed at 10 monitoring points, and 9 270 rats were captured. The mean density of rats was 7.04%, with 7.01% in fields and 7.09% in villages; there was no significant difference (χ2=1.734, P=0.420). Nine species of rodents were captured in three years, and the dominant species were Apodemus agrarius and Rattus norvegicus. The mean infection rate was 1.79 times the virus-carrying rate (10.19% vs 5.68%). The virus-carrying rate and infection rate of R. norvegicus (9.63% and 13.88%, respectively) were higher than those of A. agrarius (3.16% and 8.14%, respectively). Conclusion HFRS host animals have a high population density, biodiversity, and high virus-carrying rate and infection rate in Heilongjiang province. The mean virus-carrying rate and infection rate of R. norvegicus in 2014-2016 was higher than those of A. agrarius. In order to further reduce the incidence of HFRS in this province, it is necessary to strengthen monitoring of host animals and to implement rodent control and the national project for expanding the immunization against HFRS.
HU Quan-bo, CHEN Shu-hong, SUN Wei, XU Jun, HUA Hua, YANG Ming, LI Ji-hong, ZHOU Guang-en
. Monitoring of epidemic situation of host animals of hemorrhagic fever with renal syndrome in Heilongjiang province, China, in 2014-2016[J]. Chinese Journal of Vector Biology and Control, 2019
, 30(3)
: 278
-280
.
DOI: 10.11853/j.issn.1003.8280.2019.03.011
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