title: [Retrospect and prospect on infectious disease early warning system].
authors: Email: yangwz@chinacdc.cn.
authors: Weizhong
authors: W
authors: Yang
authors: Yajia
authors: Y
authors: Lan
authors: Zhongjie
authors: Z
authors: Li
mesh_terms: D003140:Communicable Disease Control; D003141:Communicable Diseases; D018563:Disease Notification; D006801:Humans; D011159:Population Surveillance / Q000379:methods*