关键词: 肾综合征出血热, 监测

Abstract: This article reports epidemics of HFRS in human and animals and the results of control and surveillance in Fengtai County from 1982 to 1993.Since the first case of HFRS occurred in Yuan Xing construction sector of the harness enginee-ring of the Huai River in 1957,cases gradually increased and epidemic areas gradually expanded.A total of 6 924 cases occurred from 1959 to 1993 with 141 deaths.The annual average morbidity rose from 8.28/100000 in 1960s to 80.64/100000 in 1980s, and the morbidity in the first three years of 1990s was 67.75/100000. The case fatality rate declined from 40% in 1959 to 6.47% in 1960s, 1.59% in 1980s and 0.56% in the first three years of 1990s.The epidemic areas gradually expanded from river wandering areas and lake low-lying areas to all villages and towns of the County.Four rather 1arge epidemics of HFRS have appeared in the past 30 or more years.Severe epidemic areas were relatively stable. The occurrence of this disease showed a seasonal peak. Adolescent and adult farmers were predominant.Male patie-nts＿were more than female patients.The antibody-positive rate in convalecent sera was 95.42%.The inapparent infection rate among healthy population was 1.79% from 1982 to 1990, and 4.73% from 1991 to 1993. Apodemus agrarius and Rattus norvegicus were the predominant species of rats in fields and in residential areas, and their constitutional percantages were 80.49％ and 51.49%,respectively.Their densities were high, related with the occurrence of HFRS. HFRS virus antigen had been detected from lungs of Apodemus agrarius and Rattus norvegicus.