西安市灞桥区某奶牛场人群布氏杆菌感染现状调查

Investigation of the Infection Situation of Brucellosis among the Population in a Pasture at Baqiao District of Xi'an

目的通过对确认2头布病牛的调查,了解某奶场人群布氏杆菌感染现况。方法根据《陕西省布病监测方案》开展调查,采集密切接触者血清,应用RBPT和SAT试验进行布氏杆菌筛查;病例判定依据GB15988-1995。结果该场20人接受检测,RBPT试验阳性13人(65.0%),与西安市布病监测点阳性率(1.0%)比较,差异有统计学意义(χ2=257.652,P<0.01),13例既往感染者,经SAT试验,抗体滴度在1∶100以上者6例(30.0%),抗体滴度在1∶200和1∶400分别为2例,判定为现症感染者,与监测点阳性率(0.25%)比较,差异有统计学意义(χ2=85.2525,P<0.01)。结论该人群感染明显高于一般职业人群。牛种布氏杆菌由于无临床症状未引起足够重视,本调查提示:职业人群高感染现象,值得在监测和临床工作中注意。

[ Objective] To investigate the infection situation of brucellosis among the population in a pasture through the investigation of 2 brucellosis milch cows. [ Methods ] The investigation was carried out according to Shanxi Project for Brucellosis Surveillance ; serum was collected from the people who had close contact with brucellosis cows ; RBPT and SAT tests were applied to screen the infection situation of brucellosis ; the cases was judged according to GB 15988 - 1995. [ Results] The RBPT positive rate of brucellosis were 65.0% （ 13/20 ）, which was significantly different from that of the surveillance spots in Xi＇an （ 1.0% ） （ P 〈 0.01 ） ; the SAT test showed that 6 cases （ 30.0% ） had antibody titer of above 1 ： 100, 2 cases had anybody titer between 1 ： 200 and 1： 400, they were diagnosed as current infected patients, the difference was significant compared with that of the surveillance spot （0.25%） （Χ^2 =85. 2525, P 〈0.01）. [ Conclusion] The infection rate among this population is proved to be significantly higher than that of other occupational populations; the non clinical symptoms of cow-type brucellosis should be put into greater emphasis; the high infection rate among the occupational population is expected to be taken into close surveillance.