多年的传统医院和医生的任务就是治病 ,“预防为主”的方针只是针对急性传染病而言的。对传染性疾病国家和地方有专门机构 (防疫站 )管理 ,并取得了很大成绩。由于医学的发展和疾病谱的变迁 ,近年威胁人民健康最严重的不再是传染病而是诸如心血管病、癌症、糖尿病、慢性气管炎? The mission of traditional hospitals and doctors for many years is to treat diseases. The “prevention-oriented” approach is only for acute infectious diseases. There are special agencies (epidemic stations) for the management of communicable diseases in countries and regions, and great achievements have been made. Due to the development of medical science and changes in the spectrum of diseases, the most serious threat to people’s health in recent years is no longer an infectious disease but such as cardiovascular disease, cancer, diabetes, and chronic bronchitis.