zone natural foci 自然疫源地带
history natural foci 历史疫源地
zone of natural foci 自然疫源地带
natural foci of infection 自然疫源地
natural epidemic foci 自然疫源地
disease of natural epidemic foci 自然疫源性疾病
Conclusion The natural foci of Angiostrongyliasis are present in Yunnan.
结论云南省存在广州管圆线虫病自然疫源地。
Conclusion: It shows that there exist natural foci of Sindbis Fever in the forest area of Ninghua, Fujian.
结论：福建宁化林区可能存在辛德毕斯热自然疫源地。
Conclusion The natural foci of HFRS were extensively present in Guangxi with R. novegicus being the major host animal. SEOV was prevalent in the region.
结论 广西区广泛存在以褐家鼠为主要宿主的HFRS家鼠型疫源地，并存在汉城型汉坦病毒的流行。
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