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1991年7月,在岳阳市长炼地区调查正常人群(年龄:1～59)血清抗—HAV IgG,检测用ELISA法。共检测2418人,总阳性率为67.41％。阳性率在20岁以前随年龄增大而明显增高,在20岁以后相对稳定。总的概况:1～9岁较低(15～22％),10～14岁(58％),15～19岁(75％)居中,20～59岁最高(89～94％)。男女阳性率相比无差别(X~2:2.096,P>0.05)。6种不同职业,除炊事员阳性率明显高于教师外(X~2:7.93,P<0.01),其他职业之间无显著性差异。表明长炼地区为甲肝中发区,甲肝易感人群主要是14岁以下(特别是9岁以下)的儿童,他们应当是接种甲肝疫苗的重点对象。
In July 1991, a normal population (age: 1-59) of serum anti-HAV IgG was investigated in the Changyao district of Yueyang and detected by ELISA. A total of 2418 people were tested, the total positive rate was 67.41%. The positive rate increased significantly with age before the age of 20 and was relatively stable after 20 years of age. Overall Profile: 1-9 years old lower (15-22%), 10-14 years old (58%), 15-19 years old (75%) middle aged 20- 59 years old the highest (89-94%). There was no difference between male and female positive rate (X ~ 2: 2.096, P> 0.05). There were no significant differences among the six occupations except that the positive rate of cook was significantly higher than that of teachers (X ~ 2: 7.93, P <0.01). Indicating that the long refining areas for the hepatitis A in the hair, hepatitis A susceptible population mainly under 14 years of age (especially under 9 years of age children, they should be the key target of hepatitis A vaccine.