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１９９８年全国ＨＦＲＳ监测点共发病１３１１１例，死亡１２２例，年发病率为５４５／１０万，病死率为０９３％，较１９９７年（发病１２０７９例，死亡１１８例，年发病率５２１／１０万，病死率为０９８％）略有上升。全年共有２８个监测点进行了病人血清学核实和（或）漏报调查工作，临床诊断血清学符合率为６３９９％，疫情漏报率为０３２％。从宿主动物监测结果看，监测点在野外共布放鼠夹４７２１９个，捕获各种小兽４８４３只，总密度为１０２６％，其中黑线姬鼠密度４２０％，其种群数量构成占４０９７％，仍为野外的优势鼠种；在居民区内共布放鼠夹５２８６８个，捕获各种小兽４０３６只，总密度为７６３％，其中褐家鼠密度为３７９％，其种群数量构成占４９６０％，仍为居民区内的优势鼠种。从主要宿主动物带病毒鼠指数看，１９９８年野外黑线姬鼠为００４２，居民区褐家鼠为００３６，较１９９７年（分别为００３６、００２４）有所上升。提示，人间疫情与宿主动物带病毒鼠指数呈相关性。同时监测表明，近年来的ＨＦＲＳ疫情存在由高、中发病区向中低发病区增强和由偏远农村地区向中心城市扩展的可能，应引起足够的重视。
In 1998, a total of 13111 HFRS surveillance sites were reported in the country with 122 deaths, with an annual incidence rate of 545 / 100,000 and a case fatality rate of 093%. Compared with 1997 (12079 cases and 118 deaths, the annual incidence rate was 5 ⒉21 / 100,000, case fatality rate was 098%) increased slightly. A total of 28 monitoring sites conducted serological verification and / or omission reporting at 28 monitoring sites. The coincidence rate of clinical diagnostic serology was 63.99%, and the rate of false negatives was 0.32%. From the host animal monitoring results, the monitoring points in the wild were placed a total of 47,219 mouse clip, capturing a variety of small animals 4843, the total density of 10 26%, of which Apodemus agrarius density 4 20%, the number of its population constitutes 4097%, still dominant in the wild rat species; in the residential area were placed a total of 52868 mouse clip, capture a variety of small animals 4036, the total density of 763%, of which the brown rat density was 379% , Accounting for 4960% of the population, which is still the dominant species in the residential area. From the main host animal with virus mouse index, 1998 Apodemus agrarius 0 042, residential brown-handed rats was 0 036, compared with 1997 (respectively 0 036,0 024) increased. Tip, the human epidemic and host animals with virus mouse index was correlated. At the same time monitoring shows that HFRS epidemic in recent years, there are from high and middle incidence area to the low incidence area increased and remote rural areas to the center of the city may expand, should be given sufficient attention.