The resurgence and emergence of infectious diseases and the increase of noninfectious diseases (angiocardiopathy, tumor, diabetes, etc.) will threaten the human health.

• 已控制的传染病卷土重来，新的传染病不断涌现以及心血管疾病、肿瘤、糖尿病等非传染病的发病不断增多，对人类健康构成巨大威胁；