Williams R
Am J Public Health. 1986 Mar;76(3):282-3. doi: 10.2105/ajph.76.3.282.
Previous studies of the prevalence of immunity to hepatitis A (anti-HAV) in the United States have used urban settings or institutions for the mentally handicapped. In a rural setting among normal children, a serologic investigation of prevalence of anti-HAV was conducted in a boarding school adjacent to the Navajo reservation. The results show rates of anti-HAV that are the highest reported at the ages tested in any subpopulation in the United States, comparable only with those in developing countries.
美国此前关于甲型肝炎免疫力(抗-HAV)流行率的研究使用的是城市环境或针对智障人士的机构。在一个农村地区的正常儿童中,对纳瓦霍保留地附近一所寄宿学校的抗-HAV流行率进行了血清学调查。结果显示,抗-HAV的比率是美国任何亚人群在测试年龄中报告的最高比率,仅与发展中国家的比率相当。