Objective To investigate the distribution and species of ticks in the endemic areas of severe fever with thrombocytopenia (SFTS) in Anqing and Chuzhou City,Anhui province. Methods In June 2017,4 natural villages in Anqing city and 4 natural villages in Chuzhou City with high incidence of fever and thrombocytopenia syndrome were selected to investigate the distribution of ticks.The free ticks in the external environment were collected by artificial flag laying method,and the parasitic ticks on the body surface of sheep were collected by the surface ticks method of the host,and the tick species and tick density were analyzed. Results A total of 873 ticks were captured,including 212 free ticks and 661 parasitic ticks,which belong to 1 family,1 genus and 2 species.Both free ticks and parasitic ticks belong to Haemaphysalis of ixodelidae,6 adult ticks in free ticks,5 of which were identified as Haemaphysalis longicornis,the other one was unknown;321 adult ticks in parasitic ticks,mainly Haemaphysalis longicornis (99.4%),and 2 new Haemaphysalis major were found in this survey.The average density of free ticks was 38.5 per man hour.The total tick infection rate was 83.3%,tick density was 4.6 / host,and tick density index was 5.5/host. Conclusion Haemaphysalis longicornis is the dominant tick species in the epidemic area of fever with thrombocytopenia in Chuzhou and Anqing City of Anhui Province.The density of free ticks in the external environment and parasitic ticks in the host animals are both high,and the local residents who live and produce are faced with high risk of infection.
Key words
Fever with thrombocytopenia syndrome /
Free ticks /
Parasitic ticks /
Tick density
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
References
[1] 许祝平,喻荣斌,钱燕华,等.发热伴血小板减少综合征研究进展[J].现代预防医学,2013,40(22):4242-4247.
[2] 王建跃,邬辉,仝振东,等.发热伴血小板减少综合征流行病学研究进展[J].中华流行病学杂志,2016,2(37):294-298.
[3] Sun JM,Lu Liang,Wu HX,et al.The changing epidemiological characteristics of severe fever withthrombocytopenia syndrome in China[J]Nature,2017,7(1):,9236.DOI:10.1038/s41598-017-08042-6.
[4] 邓国藩,姜在阶.中国经济昆虫志:第三十九册[M]北京:科学出版社,1991:103-230.
[5] Luo LM,zhao L,wen HL,et a1.Haemaphysalislongicornis ticks as reservoir and vectorof severe fever with thrombocytopenia syndrome virus in China[J].Emerg Infect Dis,2015,21(10):1770-1776.DOI:10.320l/eid12110.150126.
[6] Wang SW,Li JD,Niu GY,et a1.SFTS virus in ticks in an endemic area of china[J].Am J Trop Med Hyg,2015,92(4): 684-689.DOI: 10.4269/ajtmh.14-0008.
[7] Yu XJ,Liang MF,Zhang SY,et al.Fever with thrombocytopenia associated with a novel bunyavirus in China[J].N Engl J Med,2011,364(16): 1523-1532.
[8] 夏立照.安徽蜱类名录[J].华东昆虫学报,1993,2(2):21-23.
[9] Zhang GS,Zheng D,Tian YQ,et al,A dataset of distribution and diversity of ticks in China[J].Scientific data,2019,6(1):105.DOI: 10.1038/s41597-019-0115-5.
[10] 刘洋,黄学勇,杜燕华,等.河南发热伴血小板减少综合征流行区蜱类分布及媒介携带新布尼亚病毒状况调查[J].中华预防医学杂志,2012,46(6):500-504.
[11] 辛正,王东,杨国樑,等.济南市蜱分布及带病毒状况调查[J].中国媒介生物学及控制杂志,2015,26(2):179-181.
[12] 曹琛,吴家兵,曹明华,等.安徽省2011-2015年发热伴血小板减少综合征流行特征分析[J].中华疾病控制杂志,2016,20(8):792-795.
PDF(934 KB)
