关键词: 自然疫源性疾病, 流行因素

Abstract: Objective To profile and analyze the epidemic and distribution of natural focus diseases from 1991 to 2006 in China,and to explore the influencing factors at present so as to provide information for natural focus diseases surveillance.Methods National data on the prevalence of important natural focus diseases,such as plague,hemorrhagic fever with renal syndrome,rabies,epidemic encephalitis type B,leptospirosis,brucellosis,dengue fever,and malaria from 1991 to 2006 were collected and analyzed.Results From 1991 to 2006,the annual reported cases were 1 859 295 and fatality were 39 028.In 2006,the proportion of morbidity in the reported cases decreased 70 percent from 7 percent in the early 90′s to 2 percent.The proportion of fatality in the reported cases decreased from 50 percent in the early 90′s to 40 percent,which still poses a higher level.The cases mainly located in the warm temperate zone and subtropical zone of China,i.e.more in the southern and less in the northern in China.Increasing floating populations,global warming,inbreak and pesticide resistance of vectors and animal host,changes of ecological environment,and the rapid growth of husbandry and related product processing might serve as important factors influencing on natural focus diseases.Conclusion We suggest strengthening research on early warning monitoring,evaluation of efficacy for strategy of inoculation and disease prevention and control,and integrated management of vectors and animal hosts in China.