title: [Information obtained through Internet-based media surveillance regarding domestic public health emergencies in 2013].
abstract: OBJECTIVE
  To analyze the information obtained through Internet-based media surveillance in 2013 on domestic public health emergencies and to compare with the related data reported through Chinese Public Health Emergency Management Information System (PHEMIS), and to study the role of Internet-based Media Surveillance Program (IBMSP) in the detection of public health emergencies.
  
  
  METHODS
  A descriptive analysis was conducted based on the database of the information on domestic public health emergencies. Information was obtained through the Internet-based media surveillance in 2013.
  
  
  RESULTS
  A total of 752 pieces of information regarding domestic public health emergencies in 31 provinces were obtained, through the IBMSP, run by the China CDC in 2013. 53.46% of all the information were categorized as initial ones on public health emergency while another 22.07% were considered as updated ones. 41.62% of the information were related to infectious diseases with another 24.73% to food poisoning. 27.53% of the information were from official websites of governments and professional organizations, with the rest 72.47% were from media. As for corresponding public health emergencies, 41.79% were food poisoning and 18.66% were infectious diseases. 22.39% of them occurred in schools, 18.16% in other organizations and 16.92% in households. 28.86% were reported through Chinese PHEMIS. For the 116 public health emergencies that both related to information obtained through Internet-based media surveillance in 2013 and reported through PHEMIS, the median days of interval between illness onset of the first case as well as reported by media, interval between onset of the first case as well as reported through PHEMIS, were 2.5 days and 2.0 days respectively. 19.83% of the emergencies were first reported by media than through PHEMIS.
  
  
  CONCLUSIONS
  Internet-based media surveillance programs had become an important way to detect public health emergencies and could serve as the supplement to the classic surveillance programs on public health emergencies.
authors.affiliation: Public Health Emergency Center, Chinese Center for Disease Control and Prevention, Beijing 102206, China.
authors.forename: Ling
authors.initials: L
authors.lastname: Meng
authors.affiliation: Division for Communicable Disease Control and Prevention, Liuan Center for Disease Control and Prevention.
authors.forename: Yong
authors.initials: Y
authors.lastname: Lyu
authors.affiliation: Public Health Emergency Center, Chinese Center for Disease Control and Prevention, Beijing 102206, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Cao
authors.affiliation: Public Health Emergency Center, Chinese Center for Disease Control and Prevention, Beijing 102206, China.
authors.forename: Wenxiao
authors.initials: W
authors.lastname: Tu
authors.affiliation: Public Health Emergency Center, Chinese Center for Disease Control and Prevention, Beijing 102206, China.
authors.forename: Zhiheng
authors.initials: Z
authors.lastname: Hong
authors.affiliation: Public Health Emergency Center, Chinese Center for Disease Control and Prevention, Beijing 102206, China.
authors.forename: Leilei
authors.initials: L
authors.lastname: Li
authors.affiliation: Public Health Emergency Center, Chinese Center for Disease Control and Prevention, Beijing 102206, China.
authors.forename: Daxin
authors.initials: D
authors.lastname: Ni
authors.affiliation: Public Health Emergency Center, Chinese Center for Disease Control and Prevention, Beijing 102206, China.
authors.forename: Qun
authors.initials: Q
authors.lastname: Li
authors.affiliation: Public Health Emergency Center, Chinese Center for Disease Control and Prevention, Beijing 102206, China; Email: jinlm@chinacdc.cn.
authors.forename: Lianmei
authors.initials: L
authors.lastname: Jin
mesh_terms: D002681:China / Q000453:epidemiology; D003141:Communicable Diseases / Q000453:epidemiology; D016208:Databases, Factual; D004630:Emergencies; D006801:Humans; D020407:Internet; D062486:Public Health Surveillance / Q000379:methods*