【摘要】 目的观察儿童接种3剂甲乙型肝炎联合疫苗后的乙肝加强免疫效果,为乙肝加强预防接种的实施提供依据。方法于2009年9月采用整群抽样方法,在玉环县抽取已完成乙肝基础免疫、未加强接种且乙肝感染标志物均阴性的6~9岁儿童123名,按照"0-1-6"程序接种3剂甲乙型肝炎联合疫苗,并于加强接种1年和5年后分别检测乙肝病毒表面抗体(抗-HBs)浓度。结果加强接种1年和5年后分别检测102和82人,抗-HBs阳性率分别为92.16%和78.05%,差异有统计学意义(P<0.05)。5年随访的82名儿童加强接种前、1年和5年的抗-HBs浓度分别为2.95、141.76和72.13 m IU/m L,差异有统计学意义(P<0.01);不同出生年份儿童抗-HBs浓度差异无统计学意义(P>0.05);检测时间与出生年份存在交互作用(P<0.05)。结论对乙肝疫苗基础免疫后抗-HBs转阴的6~9岁儿童采用3剂甲乙型肝炎联合疫苗进行加强接种,乙肝免疫效果较好。更多还原

【Abstract】 Objective To observe the concentration of the anti-HBs of children boosted with hepatitis A and B combined vaccine for 3 dosages, and to provide the basis for the implementation of hepatitis B booster immunization. Methods In September 2009 in Yuhuan by employing the cluster sampling method, 123 children, ranging from 6 to 9 years old,who had completed the basic immunization by 0-1-6 procedure without hepatitis B vaccine boosted and without anti-HBs were selected. In the year of 2011(after 1 year of inoculation) and 2015(5 years after inoculation),the venous blood samples were collected to determine the concentration of anti-HBs. Results Boosted with hepatitis A and B combined vaccine for 3 times, the anti-HBs of 102 subjects was tested in the next year, of which the anti-HBs of 82 subjects was detected again in the later 5 years. The results suggested that the positive rates of antibody enhanced were 92.16% after 1year and 78.05% after 5 years, respectively. The average concentration of anti-HBs of these 82 subjects was 2.95 m IU/m L before inoculation, 141.76 m IU/m L one year later and 72.13 m IU/m L 5 years later and there was statistically significant difference among them(P <0.05). The difference was not statistically significant between subjects with different years of birth(P>0.05). Moreover,the interaction was existed between the year of blood detection and year of birth(P <0.05). Conclusion To children aged 6-9 years old whose anti-HBs were negative after the primary immunization of hepatitis B, booster immunization with 3 dosages of hepatitis A and B combined vaccine shows good immune effect against hepatitis B virus.更多还原