流行病毒学 Epidemiology Natural host: Rodent apodemus agrarius ( Stripped field mice,黑线姬鼠) 传染源:黑线姬鼠、褐家鼠、大林姫鼠 Viral contamination comes from rodent urine stool, salivary secretion a Seasonal and regional distribution (autumn and winter, Oct.-Jan) The infection route is still uncertain. The possible entries are respiratory tract, mouth and direct contact流行病毒学 Epidemiology ◼ Natural host: Rodent Apodemus agrarius (Stripped field mice, 黑线姬鼠) ◼ 传染源：黑线姬鼠、褐家鼠、大林姬鼠 ◼ Viral contamination comes from rodent urine, stool, salivary secretion ◼ Seasonal and regional distribution (autumn and winter, Oct.-Jan.) ◼ The infection route is still uncertain. The possible entries are respiratory tract, mouth, and direct contact