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1984—1987年我们在全省开展了流行性出血热(EHF)地理流行病学研究。1、确定了我省有野鼠型、家鼠型二种肾综合征出血热(HFRS)病毒血清型和三种 EHF 疫区及其地理分部,即予东南的野鼠型疫区,予西北的家鼠型疫区,予中部的混合型疫区。2,核实了全省128个县市中有125个县市为 EHF 疲区。1个县为潜在疫区。3、从11种啮齿类小兽中查出8种鼠携带 EHFV 抗原,以褐家鼠和黑线姬鼠为优势种且带毒率最高,分别为7.68%和3.68%,证实了这两种鼠为我省本病主要传染源,其余鼠种次要。并证明各疫区发病率与这二种鼠数量增多有关,与其带毒鼠数量增多呈密切正相关。4、发现我省 EHF 流行有一定的周期性变化,在自然发展情况下野鼠型一般相隔5-8年有一次较大的流行,家鼠型一般相隔3—6年有一次较大的流行。5、摸清了野鼠型和家鼠型各具特点(见表18),但其疲区类型有转化趋势。6、我省 EHF,特别是家鼠型有与铁路交通明显有关的传播特点。
From 1984 to 1987 we conducted epidemiological studies of epidemic hemorrhagic fever (EHF) in the province. 1, Identified two types of haemorrhagic fever and hamster-type hemorrhagic fever with hemorrhagic fever (HFRS) virus serotypes and three EHF epidemic areas in our province and their geographical subdivisions, namely to the southeast wild-type epidemic area, to the northwest Home mouse-type epidemic area, to the central mixed-type epidemic area. 2, verified that there are 125 counties in 128 cities and counties in the province as EHF fatigue area. 1 county is potential epidemic area. The EHFV antigen was detected in 8 of the 11 rodents. The dominant species were Rattus norvegicus and Apodemus agrarius, with the highest virulence rates of 7.68% and 3.68%, respectively, confirming these two Rat is the main source of infection in our province, the rest of the mouse species secondary. And it was proved that the incidence of each infected area was related to the increase of the number of these two kinds of rats, which was closely related to the increase of the number of rats with poisoned ones. 4, found that the epidemic of EHF in our province has some cyclical changes in the natural development of the wild-type generally separated by a 5-8 years have a greater prevalence of home mouse type generally separated by 3-6 years have a larger prevalence. 5, find out the characteristics of the wild rat and house mouse type (see Table 18), but the trend of the type of tired area. 6, EHF in our province, especially the house mouse type has obvious communication characteristics with the railway traffic.