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对1～3岁幼儿903人检测HBV感染标志,发现HBV感染率随年龄的增高而上升,1～3岁系HBV感染上升和高峰时期。对381名儿童追踪观察1年,年感染率为38.8%,HBsAg阳转率为11.6%,幼儿在生命很早时期已受到HBV高度感染。
A total of 903 children aged 1 ~ 3 years old were tested for HBV infection markers. HBV infection rate increased with age, and HBV infection increased and peaked at 1-3 years old. 381 children were followed up for 1 year. The annual infection rate was 38.8%. The HBsAg positive rate was 11.6%. The young children were already highly infected with HBV during their early life.