关键词: 流行性乙型脑炎, 病例监测, 研究

Abstract: Objective According to cases surveillance data of Japanese encephalitis(JE) from 2004 to 2005 in Guizhou province, understand the proportion of JE diagnosed cases to reported JE cases and master the epidemic status of JE to provide the science base for the control of JE case. Methods To analyze synthetically JE epidemic status based on epidemic situation surveillance management system, JE cases questionnaire, laboratory results and JE cases information of 2 surveillance counties. Results There were 1230 and 1038 cases in 2004 and 2005 respectively. The cases under 15 years old accounted for 96.58%(1188/1230) and 97.69% (1014/1038) respectively. The ratio of male to female was 1.58∶1 and 1.57∶1, respectively. The cases peak was in the 7-8 month, accounted for 78.21%(962/1230) and 79.09%(821/1038). The cases accounted for 88.36%(319/361) in two national surveillance counties. It was remarkable seasonal and highly dispersed for JE. The population with vaccine history was only 6.90%(26/377) and 8.86%(32/361). The positive rate of JE IgM antibody was 74.90%(188/251) and 71.74%(259/361) respectively. And it reached 71.88%(23/32) in surveillance counties. The JE cases reduced 15.61% in 2005 compared to that of 2004, and it decreased 39.47% in surveillance counties. Conclusion The diagnosed JE cases accounted for 71.88%-74.90% in Guizhou province. It should further strengthen JE surveillance system, enhance laboratory diagnosis technique so as to diagnize effectivly JE cases, and put the emphasis on the immunization of JE vaccine to the population of under 15 years old.