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昌平地区甲型病毒性肝炎(甲肝)自1982年流行高峰后,发病一直处于较低水平。为加强甲肝的流行病学监测,指导我县甲肝的防治工作,于1992年5月进行了甲肝抗体(抗-HAV)阳性率调查。材料和方法1.调查对象:随机抽取阳坊镇后白村、南口镇红泥沟村和南邵乡辛庄村为调查点。每个调查点按片分组约120人的若干组、再随机抽取一组,该组的0～59岁者为调查对象。2.采样和抗体检测:每名调查对象采静脉血、及时分离血清于-20℃条件下保存待检。抗-HAV 抗体检测采用 EIA 竞争抑制法、50％抑制率为阳性。检测工作由北京市卫生防疫站协助完成。
Changping area of hepatitis A (hepatitis A) since the epidemic peak in 1982, the incidence has been at a low level. In order to strengthen the epidemiological surveillance of hepatitis A and guide the prevention and treatment of hepatitis A in our county, a positive rate of anti-HAV antibody was investigated in May 1992. MATERIALS AND METHODS 1. Survey participants: Houbai Village of Yangfang Town, Hongniugou Village of Nankou Town and Xinzhuang Village of Nan Sha Town were randomly selected as the investigation points. Each survey point by group of about 120 groups divided into groups, and then randomly selected a group of 0 to 59-year-old group for the survey. 2. Sampling and Antibody Detection: Each subject was collected venous blood, serum was separated in time and stored at -20 ℃ for inspection. Anti-HAV antibody test using EIA competitive inhibition method, 50% inhibition rate was positive. Detection by the Beijing Health and Epidemic Prevention Station to help complete.