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我们于1979年9～11月在乐清县选择有代表性的城镇、平原、山区的人群进行乙型肝炎表面抗原(HBsAg)分布情况的调查。现将调查情况报告如下。材料和方法一、调查对象:用按比例分层整群抽样的方法,调查县城关镇居民及各种职业人群;平原(蒲岐公社)二个大队;山区(白石公社)二个大队。共调查3,465人,进行了采血、体检及流行病学调查。
We investigated the distribution of hepatitis B surface antigen (HBsAg) in selected towns, plains and mountains in Yueqing County from September to November 1979. Now the investigation report as follows. MATERIALS AND METHODS A. Subjects of survey: Investigate residents of Chengguanguan township and various occupational groups by means of stratified cluster sampling; two groups of plains (Puqi commune) and two groups of mountainous area (Baishi commune). A total of 3,465 people were surveyed for blood sampling, physical examination and epidemiological investigation.