MethodsFasting venous blood(3 mL) was collected from children aged(4-)10 years. HBV markers i.e.HBsAg,anti-HBs,anti-HBe,anti-HBc and glutamic pyruvic transaminase(GPT) were detected by ELISA method.

• 方法所有儿童均抽空腹静脉血3 mL,采用酶联免疫吸附试验(ELISA法)检测HBV血清标志物(HBsAg、抗-HBs、HBeAg、抗-HBe、抗-HBc)和谷丙转氨酶(GPT)。