Abstract：Objective To analyze the features of infectious disease automatic early warning signals in Shanghai from 2008 to 2016, and to provide a basis for optimizing the infectious diseases automated-alert and response system. Methods We downloaded the data regarding infectious disease automatic early warning signals from the China infectious diseases automated-alert and response system (CIDARS), then described and analyzed according to the factors like year, type of early warning signal, type of disease and early warning signal response. Results A total of 59,603 signals were issued by the CIDARS in Shanghai from 2008 to 2016, involving 32 kinds of infectious diseases. The signals occupied the first five places were chicken pox, measles, other infectious diarrhea, mumps and hand-food-mouth disease. The types of early warnings of different diseases were different, and the early warning signals of different diseases varied with the years. 1,952 signals were verified as suspected outbreaks. The effective rate of early warning signals was 3.28%, of which the efficiency of single-case early warning was the highest (12.50%), followed by the time warning (1.73%) and the space-time warning (1.01%), with a statistically significant difference (P<0.001). The timely processing rate of early warning signals was 85.69% (51,071/59,603), of which the timely processing rate of single-case early warning signals was the highest (91.47%), followed by the time warning (86.34%) and the space-time warning (80.69%), with a statistically significant difference (P<0.001). Conclusions The overall running status of the CIDARS in Shanghai during 2008-2016 was good, but there were still problems like high proportion of false-positive early warning signals and delayed response. It is necessary to further improve functions and parameter setting of the CIDARS and promote medical workers’ disposal ability and reporting consciousness.
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2019, Vol. 26 
