美洲钝眼蜱（蜱螨亚纲：硬蜱科）感染与白尾鹿体内查菲埃立克体（立克次氏体目：埃立克体科）反应性抗体之间的特定地点地理关联。

Site-specific geographic association between Amblyomma americanum (Acari: Ixodidae) infestations and Ehrlichia chaffeensis-reactive (Rickettsiales: Ehrlichieae) antibodies in white-tailed deer.

作者信息

Lockhart J M, Davidson W R, Stallknecht D E, Dawson J E

机构信息

Southeastern Cooperative Wildlife Disease Study, Department of Veterinary Parasitology, University of Georgia, Athens 30602, USA.

出版信息

J Med Entomol. 1996 Jan;33(1):153-8. doi: 10.1093/jmedent/33.1.153.

DOI:10.1093/jmedent/33.1.153

PMID:8906920

Abstract

Serum samples from white-tailed deer, Odocoileus virginianus Zimmermann, collected from 1982 through 1992 from the southeastern United States were tested for antibodies reactive to Ehrlichia chaffeensis Anderson, Dawson, Jones, & Wilson, the causative agent of human ehrlichiosis. Results were compared between areas based on known infestations of the lone star tick, Amblyomma americanum L., a suspected vector of E. chaffeensis. One hundred and twenty-five of 300 (41.7%) deer tested positive (> or = 1:128) for E. chaffeensis-reactive antibodies by fluorescent antibody analysis. Thirty of 30 (100%) collection areas known to be lone star tick infested contained deer that tested positive for E. chaffeensis-reactive antibodies, corresponding to 121/150 (80.7%) of deer examined. A few deer, 4/150 (2.7%) of those examined, from 2 of 30 (6.7%) areas where lone star ticks were not detected were positive for E. chaffeensis-reactive antibodies. This site-specific geographic association between A. americanum and the presence of E. chaffeensis-reactive antibodies in deer provides strong evidence that A. americanum is a natural vector of E. chaffeensis or a closely related species among white-tailed deer.

摘要

对1982年至1992年从美国东南部采集的白尾鹿（学名：Odocoileus virginianus Zimmermann）血清样本进行检测，以寻找对查菲埃立克体（学名：Ehrlichia chaffeensis Anderson, Dawson, Jones, & Wilson，人类埃立克体病的病原体）有反应的抗体。根据已知的孤星蜱（学名：Amblyomma americanum L.，查菲埃立克体的疑似传播媒介）感染情况，对不同地区的检测结果进行比较。通过荧光抗体分析，300只鹿中有125只（41.7%）检测出对查菲埃立克体反应性抗体呈阳性（≥1:128）。在已知有孤星蜱感染的30个采集区域中，有30个区域（100%）的鹿检测出对查菲埃立克体反应性抗体呈阳性，相当于所检测鹿中的121/150（80.7%）。在未检测到孤星蜱的30个区域中的2个区域，有少数几只鹿，即所检测鹿中的4/150（2.7%），对查菲埃立克体反应性抗体呈阳性。美洲钝眼蜱与鹿体内查菲埃立克体反应性抗体的存在之间这种特定地点的地理关联，有力地证明了美洲钝眼蜱是查菲埃立克体或白尾鹿中密切相关物种的天然传播媒介。