北京市流感监测及预警分析

1、when a C1 warning was produced in a given week and the value of the following week was greater than that of the selected week, the selected week was the week of onset; or when a C2 warning was produced in a given week and a C1 or C2 warning was generated in the following week, the following week was

2、 the week of onset; or when a C3 warning was produced in a given week, and the following consecutive 2 warnings of C1, C2, or C3 were generated in the following 2 weeks, and the above 2 situations did not occur, the third week of the warning occurring was the week of onset.*以达到该流行季最大病毒阳性率的40%所在周为流感流

3、行起始周，即第49周。Cowling BJ, et al. Int J Epidemiol. 2006;35:131421.All - ILI0510152025303540459-9-079-16-079-23-079-30-0710-7-0710-14-0710-21-0710-28-0711-4-0711-11-0711-18-0711-25-0712-2-0712-9-0712-16-0712-23-0712-30-071-6-081-13-081-20-081-27-082-3-082-10-082-17-082-24-083-2-083-9-083-16-083-23-083-30

4、-084-6-084-13-084-20-084-27-085148ILI rateILI countFlags meeting the standardOnset week Flags meeting the standardOnset week Hospital levelsLevel 1C1 in a given week and the greater following value51st C1 in a given week and the greater following value51stLevel 2Consecutive two C251st Consecutive two C249th*Level 3C1 in a given week and the greater following value51st Consecutive three C349th*Age groups0NANAConsecutive three C348th5NANAConsecutive two C246th15NANAC1 in a given week and the greater following value49th*25NANAC1 in a given week and the greater fol