6Bravata. DM, McDonald K. M, Smith WM, et al. Systematic review: surveillance systems for early detection of bioterrorism-related diseases[J]. Ann Intern Med. 2004, 140 ( 11 ) : 910-922.
7North Carolina Disease Event Tracking and Epidemiologic Collection Tool: Technical Overview. ASTHO Conference Call December 19, 2005. Accessed at http://www, ncdetect.org/pubs. html.
8Bradley. CA, Rolka. H, Walker.D, et al. BioSense: Implementation of a National Early Event Detection and Situational Awareness System[J]. MMWR Morb Mortal Wkly Rep,2005,54(Suppl) : 11-19.
9Chang M, Glynn MK, Groseclose SL. Endemic, notifiable bioterrorism-related diseases, United States, 1992-1999 [J].Emerg Infect Dis, 2003,9:556-564.
10Surveillance: Tuberculosis incident and outbreak surveillance (TBIOS). Reviewed on 21 March 2006. Accessed at: http://www. hpa.org.uk/
2Wagner MM, Tsui FC, Espino JU, et al. The emerging science of very early detection of disease outbreaks. J Public Health Manag Pract, 2001, 7:51-59.
3Lewis MD, Pavlin JA, Mansfield JL, et al. Disease outbreak detection system using syndmmic data in the greater Washington DC area. Am J Prev Med, 2002,23:180-186.
5Lazarus R, Kleinman K, Dashevsky I, et al. Use of automated ambulatory-care encounter records for detection of acute illness clusters, including potential bioterrorism events. Emerg Infect Dis,2002,8:753-760.
6Osaka K, Takahashi H, Ohyama T. Testing a symptom-based surveillance in high profile gatherings as a preparatory measure for bioterrorism. Epidemiol Infect,2002,129:429-434.
7Rodman JS, Frost FJ, Davis-Burchat L, et al. Pharmaceutical sales- a method of disease surveillance. J Environ Health, 1997, 60:8-14.
8Reingold A. If syndromic surveillance is the answer, what is the question ? Biosecur Bioterror ,2003,1 : 77-81.
9Birkhead G, Chorba TL, Root S, et al. Timeliness of national reporting of communicable diseases: the experience of the National Electronic Telecommunications System for Surveillance. Am J Public Health, 1991, 81: 1313-1315.
10Begier EM, Sockwell D, Branch LM, et al. The National Capitol Region's Emergency Department syndromic surveillance system: do chief complaint and discharge diagnosis yield different results? Emerg Infect Dis, 2003,9:393-396.
