克山病是一种病因至今没有查明的地方性心肌病。在南方流行期发病率一般为50～400/10万。临床普查可发现有大量潜在型存在,提示克山病如同某些病相似,存在“冰山”现象。病区人群虽普遍受致病因子的作用,发病的仅仅是少数。这些病区健康人体 Keshan disease is an endemic cardiomyopathy that has not yet been identified. The prevalence in the southern epidemic is generally 50 to 400 / 100,000. Clinical census can be found in a large number of potential exists, suggesting Keshan disease as some similar, there “iceberg” phenomenon. Ward populations generally affected by the role of causative agents, the incidence of only a few. These wards are healthy people