Zając Violetta, Wójcik-Fatla Angelina, Cisak Ewa, Sroka Jacek, Sawczyn Anna, Dutkiewicz Jacek
Department of Zoonoses, Institute of Rural Health, Lublin, Poland.
Ann Agric Environ Med. 2013;20(2):280-2.
A group of 150 persons living in the Lublin province of eastern Poland and occupationally exposed to tick bite were examined by the immunoenzymatic ELISA test for the presence of antibodies against tick-borne Spotted Fever Group (SFG) rickettsiae. The group consisted of 75 forestry workers employed in 3 forest inspectorates and 75 agricultural workers living in 2 villages. As a control group, 43 urban dwellers living in the city of Lublin and not occupationally exposed to tick bite were examined. Among 150 persons occupationally exposed to tick bite, the presence of antibodies against SFG rickettsiae was found in 54 (36.0% of the total). In the control group, the frequency of positive findings was only 4.7%, being significantly smaller compared to the exposed group (p=0.0001). Within the exposed group, the percentage of positive results in forestry workers (50.7%) was greater than in agricultural workers (21.3%); the difference was statistically significant (p=0.0002). Also within this group, the frequency of positive findings in males(46.5%) was significantly greater than in females (21.9%) (p=0.0029). In the exposed group, the positive results tended to increase with the age of the examined persons. However, a significant relationship between age and positive findings was found only in forestry workers (χ(2) =14.207, p=0.00264), but not in agricultural workers and total exposed workers. The frequencies of positive results in forestry workers varied significantly depending on place of work (χ(2) =11.271, p=0.00357). Similarly, the difference between the positive reactions in agricultural workers living in 2 villages proved to be significant (34.2% vs. 8.1%; p=0.0074). The obtained results indicate that people occupationally exposed to tick bite and living in the area of eastern Poland where over half of Dermacentor reticulatus ticks harbour SFG rickettsiae, are under significantly increased risk of infection with these rickettsiae.
对居住在波兰东部卢布林省且职业上有蜱虫叮咬暴露风险的150人进行了免疫酶联免疫吸附测定（ELISA）检测，以检测其是否存在针对蜱传斑点热群（SFG）立克次体的抗体。该组包括受雇于3个森林监察局的75名林业工人和居住在2个村庄的75名农业工人。作为对照组，对居住在卢布林市且无职业蜱虫叮咬暴露风险的43名城市居民进行了检测。在150名有职业蜱虫叮咬暴露风险的人中，发现54人（占总数的36.0%）存在针对SFG立克次体的抗体。在对照组中，阳性结果的频率仅为4.7%，与暴露组相比显著更低（p = 0.0001）。在暴露组中，林业工人的阳性结果百分比（50.7%）高于农业工人（21.3%）；差异具有统计学意义（p = 0.0002）。同样在该组中，男性的阳性结果频率（46.5%）显著高于女性（21.9%）（p = 0.0029）。在暴露组中，阳性结果倾向于随着受检者年龄的增加而升高。然而，仅在林业工人中发现年龄与阳性结果之间存在显著关联（χ(2) = 14.207，p = 0.00264），而在农业工人和整个暴露工人群体中未发现。林业工人的阳性结果频率因工作地点不同而有显著差异（χ(2) = 11.271，p = 0.00357）。同样，居住在2个村庄的农业工人的阳性反应差异也被证明具有显著性（34.2%对8.1%；p = 0.0074）。所得结果表明，在波兰东部地区，超过一半的网纹革蜱携带SFG立克次体，职业上有蜱虫叮咬暴露风险的人群感染这些立克次体的风险显著增加。
