Objective To analyse prevalence trend of Japanese encephalitis（JE） in 1997-2004 in Guizhou province and to supply scientific gist for the prevention and Control strategy. Methods Analysis information was got from the epidemic surveillance and JE Cases Questionnaire. Results There were accumulative total 13 664 JE cases and 540 death cases. The annual average Morbidity and Mortality and fatality rate were 4.65/100 000 and 0. 181100 000 and 3,95 %, respectively. Male to female was 1.48 ： 1. Children of decentralization resident population accounted for 67.54 % （9 228/13 664） and students were 23.06 % （3 151/13 664）. Younger than 10 years old children case accounted for 88.00 % （ 12 024/13 664） ; Season distribution was from June to October and high peak period was from July to August. Conclusion The results showed that JE cases were mainly younger than 10 years old children in Guizhou province. The eases season were from June to October and high peak period lasted two months from July to August. The high risk prefectures were Zunyi and Bijie. There were so many cases with out vaccine history and unknown history during 1997-2004. The preventive strategies are to be that the heahh education and propaganda should be conducted. All-around control countermeasure such as preventive and destroying mosquitoes and JE vaccine immunization should be carried on to decrease the morbidity and mortality of JE in Guizhou province.
Chinese Journal of Vector Biology and Control