流行性感冒 (流感 )是常见的传染性疾病 ,通常会引起住院率增多和死亡率提高 ,到目前为止 ,仅在工业发达国家里对老年人 (≥ 6 5岁 )实行流感疫苗的接种。在发展中国家关于流感疫苗的费用效益比有说服性数据和资源投入很少 ,流感没有得到足够的重视。为评估其有效性和费用效益? Influenza (influenza) is a common infectious disease that usually leads to an increase in hospitalization and increased mortality, so far the flu vaccine has been administered to the elderly (≥65 years) only in industrialized countries. The cost-effectiveness of influenza vaccines in developing countries is less than convincing data and resources and influenza is not given enough attention. To assess its effectiveness and cost effectiveness?