A case-control study of effectiveness of seasonal influenza vaccine in children in 2013-2014
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摘要: 目的 评价2013-2014年度季节性流行性感冒疫苗(流感疫苗)对6~59月龄儿童的保护效果。方法 选择2013-2014年度6~59月龄的实验室诊断流感病例为病例组,在广州市免疫规划系统中随机选择健康儿童为对照组,进行成组病例对照研究,采用非条件Logistic回归计算保护效果。结果 本研究共纳入2 690名研究对象。2013-2014年度,流感疫苗对6~59月龄儿童的保护效果为42.3%(95% CI:27.8%~53.8%),对36~59月龄儿童的保护效果高于6~35月龄儿童,完全免疫的保护效果高于部分免疫,性别间保护效果无统计学差异。结论 流感疫苗对6~59月龄儿童具有中等保护效果,建议6~59月龄儿童每年接种流感疫苗。Abstract: Objective To estimate the effectiveness of seasonal influenza vaccine in 2013-2014. Methods A category matching case-control study was conducted among children aged 6 to 59 months. The laboratory confirmed influenza cases were randomly selected from surveillance sites in Guangzhou during the study period. The healthy controls were randomly selected from children aged 6 to 59 months in the children's expanded programmed immunization administrative computerized system. Vaccine effectiveness (VE) was analyzed by unconditional Logistic regression. Results 2 690 subjects were collected in our study. We found that the VE for vaccination in 2013-2014 for children aged 6 to 59 months was 42.3%(95% CI:27.8%-53.8%). Full vaccination provided more protection than partial vaccination. Conclusions This post-licensing study of VE found moderate protection against influenza for vaccinated children aged 6 to 59 months. Annual and full vaccination should be encouraged in children.
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Key words:
- Influenza, human /
- Vaccines /
- Case-control studies
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