Environmental Pollutants ; Humans ; Polychlorinated Biphenyls ; Population Surveillance

Epidemiologic Methods ; Humans ; Population Surveillance ; Public Health

Comet Assay ; DNA Damage ; Humans ; Occupational Exposure ; Population Surveillance ; methods

Disease Outbreaks ; Humans ; Population Surveillance ; Public Health Informatics

Communicable Diseases ; epidemiology ; Disease Outbreaks ; Humans ; Population Surveillance ; methods

China ; epidemiology ; Hemorrhagic Fever with Renal Syndrome ; epidemiology ; Humans ; Population Surveillance

Over the past decade, syndromic surveillance, as supplementation of disease surveillance, has provided possibility of early alert in a real-time way for detection of emerging infectious diseases and outbreaks of widespread infectious diseases, resulting in improvement in sensitivity of outbreak detection and public health alert capacity. This tool has been highly valued and widely used in the world, and effective implementation has been observed in China. Upon abundant literature search, the authors reviewed the progress and advance of syndromic surveillance in early alert of emerging infectious diseases and outbreaks, and analyzed the problem met in the current situation in China when implementing syndromic surveillance in local facilities, which are high cost, lack of medical information platform, lack of real-time digital alert system and lack of a comprehensive information exchange platform. The authors suggested that syndromic surveillance should be implemented considering the local situation and performed in a more effective way in the current situation. Syndromic surveillance has to be integrated into the conventional public health surveillance systems and advanced laboratory networks. Digital information system is urgently needed to achieve real-time alert.
China ; Communicable Diseases, Emerging ; Disease Outbreaks ; Humans ; Population Surveillance

OBJECTIVETo explore relationships among several capture-recapture methods to be used in injury studies.

METHODSComparing the method on the estimation number of missed cases with supergeometric distribution and proportional methods and study the relationship between the three methods.

RESULTSResults from estimation method for number of missed cases and supergeometric distribution were identical while the formula of estimation method for number of missed cases could be induced from one of supergeometric distribution formula. The distribution of injured population did not belong to the negative binomial distribution. The estimation range was not the same between proportional method and supergeometric distribution.

CONCLUSIONSEither supergeometric distribution or estimation method for number of missed cases could be chosen, but the former was simple in calculation. Considering the estimating range was not the same between supergeometric distribution and proportional method, conditions for application must be considered during implementation.

Chronic Disease ; prevention & control ; Humans ; Population Surveillance ; methods

China ; Chronic Disease ; Humans ; Population Surveillance ; Risk Factors