Disease prevention and treatment follows three stages: first comes the promotion of health; then, early diagnosis and effective treatment; and last, the reduction of disabilities and rehabilitation. The first two stages are preventive.
疾病治療工作有三階段：健康促進、早期診斷與有效治療，最後是限制殘障與進行復健，前面兩階段的工作就是預防醫學的責任。