Objective To investigate and analyze the plague epidemic situation in Yunnan province, China, in 2017, and to provide scientific evidence for the prevention and control of plague. Methods According to the national plague surveillance program and Yunnan provincial plague surveillance program, surveillance on plague hosts, vectors, etiology, and serology was conducted in 104 counties or cities of Yunnan province in 2017. The monthly monitoring reports were collected and statistically analyzed using SPSS 19.0 software. Results The captured rodents belonged to 17 species, 10 genera, 4 families, and 3 orders. 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. The fleas detected from the surface of rodents belonged to 12 species, 12 genera, 5 families, and 1 order. Xenopsylla cheopis and Leptopsylla segnis were the dominant fleas on R. tanezumi in the natural foci of R. tanezumi, while L. segnis, X. cheopis, and Monopsyllus anisus 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 detected as the secondary parasitic flea species on E. miletus. Bacteriological tests were performed on 49 182 animals and 21 533 vectors, with ten and five strains of Yersinia pestis isolated, respectively. Indirect hemagglutination (IHA) assay was used to test serum samples, and 8 out of 20 503 serum samples were positive for the plague. Seven out of 213 animal organ samples were positive for the plague using reverse IHA (RIHA). Conclusion Animal plague occurred in Yulong county, Gucheng district of Lijiang, Jianchuan county, and Heqing county in Yunnan province, which were the natural plague foci of A. chevrieri and E. miletus, with high epidemic intensity. There was no plague in the natural plague foci of R. tanezumi. It is necessary to strengthen the surveillance of plague and prepare for emergency responses in Yunnan province.
SU Li-qiong, SU Chao, WU He-song, LIANG Yun, YANG Zhi-ming
. An analysis of plague surveillance results in Yunnan province, China, in 2017[J]. Chinese Journal of Vector Biology and Control, 2019
, 30(4)
: 404
-408
.
DOI: 10.11853/j.issn.1003.8280.2019.04.011
[1] 苏丽琼,梁云,吴鹤松,等. 云南省1986-2014年人间鼠疫流行病学特征分析[J]. 中国媒介生物学及控制杂志,2016,27(4):386-388,392. DOI:10.11853/j.issn.1003.8280.2016.04.019.
[2] 石丽媛,杨桂荣,赵春花,等. 2016年云南省景洪市一起人间鼠疫疫情判定及处置[J]. 中国卫生检验杂志,2017,27(10):1502-1504,1507.
[3] 王鹏,张福新,郭英,等. 云南省玉龙县一起鼠间鼠疫的实验室判定[J]. 中国卫生检验杂志,2015,25(8):1105-1107.
[4] 谭红丽,郭英,杨文艳,等. 丽江市古城区首次证实一起鼠间鼠疫疫情[J]. 中国人兽共患病学报,2015,31(11):1086-1088. DOI:10.3969/j.issn.1002-2694.2015.11.021.
[5] Wang P,Shi LY,Zhang FX,et al. Ten years of surveillance of the Yulong plague focus in China and the molecular typing and source tracing of the isolates[J]. PLoS Negl Trop Dis,2018,2(3):e0006352. DOI:10.1371/journal.pntd.0006352.
[6] Wang P,Li W,Zhang ZK,et al. Characters of Yulong Yersinia pestis strains from Yunnan province,China[J]. Int J Clin Exp Med,2016,9(3):6394-6402.
[7] 祁腾,马丽,汪立茂,等. 攀枝花市2013-2014年鼠疫疫源地调查分析[J]. 中国媒介生物学及控制杂志,2015,26(2):192-193. DOI:10.11853/j.issn.1003.4692.2015.02.022.
[8] 罗剑龙,段炳华,柯春荣,等. 云南大理州2016年鼠疫疫情监测结果分析[J]. 医学动物防制,2017,33(12):1226-1229,1234.
[9] 赵文红,郭牧,苏丽琼,等. 1992-2014年云南省普洱市鼠疫流行概述及控制现状[J]. 医学动物防制,2018,34(4):325-327,331.
[10] 赵文红,郭牧,苏丽琼,等. 1990-2014年云南省临沧市鼠疫流行概述及控制现状[J]. 疾病预防控制通报,2016,31(2):5-7. DOI:10.13215/j.cnki.jbyfkztb.1510009.
[11] 段彪,洪梅,苏超,等. 云南省家鼠鼠疫疫源地静息期鼠疫指示动物血清流行病学调查[J]. 中国媒介生物学及控制杂志,2017,28(6):583-585. DOI:10.11853/j.issn.1003.8280.2017.06. 016.
[12] Shi LY,Yang GR,Zhang ZK,et al. Reemergence of human plague in Yunnan,China in 2016[J]. PLoS One,2018,13(6):e0198067. DOI:10.1371/journal.pone.0198067.
