Investigation and analysis of animal plague surveillance in Yunnan Province, China, in 2018
SU Li-qiong, DUAN Biao, LIANG Yun, YANG Zhi-ming, WU He-song
Yunnan Institute of Endemic Diseases Control and Prevention, Yunnan Provincial Key Laboratory for Zoonosis Control and Prevention, Yunnan Center of Plague Control and Prevention, Yunnan Collaborative Innovation Center of Public Health and Disease Control and Prevention, Dali 671000, China
Abstract：The goal of this work was to investigate and analyze the plague epidemic status in Yunnan Province, China, in 2018, and to provide scientific evidence for the prevention and control of plague. Surveillance on plague hosts, vectors, etiology and serology was conducted in 104 counties or cities in Yunnan Province in 2018, the monitoring reports were built into a database by using Excel 2013, the results were statistically analyzed with SPSS 19.0 software, and the ratios were compared with χ2 tests. Rattus tanezumi and R. norvegicus were the dominant species in the natural plague foci of R. tanezumi. Apodemus chevrieri and Eothenomys miletus were the dominant species in the natural plague foci of A. chevrieri and E. miletus. Xenopsylla cheopis and Leptopsylla segnis were the dominant fleas on R. tanezumi in the natural foci of R. tanezumi, and L. segnis, Pulex irritans and X. cheopis were the dominant fleas on R. norvegicus. In the natural plague foci of A. chevrieri and E. miletus, Frontopsylla spadix and Neopsylla specialis specialis were the dominant fleas on A. chevrieri, Ctenophthalmus quadratus was the dominant flea on E. miletus, and N. specialis specialis was the secondary parasitic flea species on E. miletus. Bacteriological tests were performed on 47 618 animals and 20 710 vectors, with 4 strains of Yersinia pestis isolated from animals and negative results from vectors. Indirect hemagglutination (IHA) assays were used to test serum samples, and 4 of 20 105 serum samples were positive for the plague. Five of 23 animal organ samples were positive for the plague, according to reverse IHA (RIHA). Animal plague occurred in Yulong county, in the Gucheng District of Lijiang in Yunnan Province, which were the natural plague foci of A. chevrieri and E. miletus and had high epidemic intensity. Although there was no plague in the natural plague foci of R. tanezumi, the outlook is not optimistic. Plague surveillance and health education work in Yunnan Province must be strengthened.
苏丽琼, 段彪, 梁云, 杨智明, 吴鹤松. 云南省2018年动物间鼠疫监测调查与分析[J]. 中国人兽共患病学报, 2020, 36(12): 1000-1005.
SU Li-qiong, DUAN Biao, LIANG Yun, YANG Zhi-ming, WU He-song. Investigation and analysis of animal plague surveillance in Yunnan Province, China, in 2018. Chinese Journal of Zoonoses, 2020, 36(12): 1000-1005.
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2020, Vol. 36 
