Objective To master the plague epidemics among animals in Kangbao county, to provide a scientific basis for accurate prediction of plague epidemic risk, and to put forward measures for plague prevention and control. Methods Based on the results of plague surveillance and epidemics among animals in Kangbao county for years, a descriptive epidemiological method was used to analyze the plague surveillance data in Kangbao county from 2014 to 2018. Results From 2014 to 2018, the annual mean densities of Meriones unguiculatus and Citellus dauricus in Kangbao county were 0.14-0.93 inds/hm2 and 0.22-0.69 inds/hm2, respectively, which showed a decreasing trend in general year by year. The major dominant species of small rodents was Cricetulus barabensis. The mean rate of M. unguiculatus with flea was 22.56%-46.26%; the mean flea index was 0.57-1.25, and the main parasitic flea was Nosopsyllus laeviceps kuzenkovi. The mean rate of C. dauricus with flea was 40.56%-88.46%; the mean flea index was 2.42-6.73, and the main parasitic flea was Citellophilus tesquorum mongolicus. Serological tests showed three positive materials; six strains of Yersinia pestis were isolated. Conclusion Kangbao county has a complex situation of plague surveillance among animals. Even in periods of low density of wild rodents, it is still necessary to continue to strengthen the plague surveillance, continuously do a good job in deratization, and regularly carry out plague risk assessment, so as to prevent the occurrence of plague epidemic in the area.
LIU Yi-yang, WANG Hai-feng, ZHAO Yong-liang
. A statistical analysis of plague surveillance results in Kangbao county, Hebei province, China from 2014 to 2018[J]. Chinese Journal of Vector Biology and Control, 2020
, 31(2)
: 215
-218
.
DOI: 10.11853/j.issn.1003.8280.2020.02.020
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