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流感疫苗接种仅推荐给慢性病患儿和2岁以下健康儿童。但近来的数据显示,日托儿童和小学生流感感染率最高并且是社区流感病毒传播的主要原因。意大利米兰大学Esposito等对2~5岁健康儿童接种流感疫苗进行了精确的成本效益评估。2002~2003年流感流行季节,通过单盲法将303名2~5岁健
Flu vaccinations are only recommended for children with chronic diseases and healthy children under 2 years of age. However, recent data show that day care children and primary school students have the highest rates of influenza infection and are the main cause of community-based influenza virus transmission. Esposito at the University of Milan, Italy, conducted an accurate cost-benefit assessment of influenza vaccination in healthy children aged 2 to 5 years. During the influenza epidemic season from 2002 to 2003, 303 healthy people aged 2 to 5 years old were recruited by single-blind method