Cisak E, Sroka J, Zwoliński J, Umiński J
Department of Occupational Biohazards, Institute of Agricultural Medicine, P.O. Box 185, 20-950 Lublin, Poland.
Ann Agric Environ Med. 1998;5(2):177-81.
The paper presents the results of seroepidemiologic studies concerning tick-borne encephalitis (TBE) in 1,583 persons (1,261 forestry workers and 233 farmers) from the Lublin region (eastern Poland) occupationally exposed to ticks and in 130 healthy blood donors (a control group). The mean percentage of seropositive reactions in forestry workers amounted to 19.8% and in farmers 32.0%. Based on 5-year research (1994-1998) conducted in 5 districts of the Lublin region, the existence of endemic foci of TBE was detected in the district of Bia a Podlaska, on the areas of Radzyń Podlaski and Parczew, where the percentage of seropositive reactions in forestry workers exceeded 50%. Statistical analysis showed that the frequency of seropositive reactions in forestry workers and farmers was significantly greater compared to control group (p < 0.001 and p < 0.05, respectively). It indicates that these groups are occupationally exposed to TBE virus. In the years 1994-98, a total of nine clinical cases of TBE (acute neuroinfection) in forestry workers and fourteen clinical cases in farmers were confirmed serologically. The effectiveness of specific immunization against TBE was proved on the basis of 100% seroconversion in 56 earlier seronegative forestry workers. The obtained results proved that forestry workers and farmers in Poland are under increased risk of infection with TBE virus.
本文介绍了对来自波兰东部卢布林地区、职业上接触蜱虫的1583人（1261名林业工人和233名农民）以及130名健康献血者（对照组）进行的蜱传脑炎（TBE）血清流行病学研究结果。林业工人血清阳性反应的平均百分比为19.8%，农民为32.0%。基于在卢布林地区5个区进行的为期5年（1994 - 1998年）的研究，在比亚瓦 - 波德拉斯卡区、拉济恩 - 波德拉斯基和帕尔采夫地区检测到了TBE的地方性疫源地，这些地方林业工人血清阳性反应的百分比超过了50%。统计分析表明，林业工人和农民血清阳性反应的频率与对照组相比显著更高（分别为p < 0.001和p < 0.05）。这表明这些群体在职业上接触到了TBE病毒。在1994 - 1998年期间，经血清学确诊，林业工人中共有9例TBE临床病例（急性神经感染），农民中有14例临床病例。在56名先前血清阴性的林业工人中，100%血清转化证明了针对TBE的特异性免疫的有效性。所获得的结果证明，波兰的林业工人和农民感染TBE病毒的风险增加。
