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otmine Sandfly (吸血白蛉) Department of Microbiology, Harbin Medical University 傳播環(huán)節(jié) ?人 – 節(jié)肢動(dòng)物 – 人 ?動(dòng)物 – 節(jié)肢動(dòng)物 –人 ?混合方式:兩種都有 Department of Microbiology, Harbin Medical University ManArthropodMan Cycle Dengue Reservoir may be in either man or arthropod vector In the latter transovarial transmission may take place Department of Microbiology, Harbin Medical University AnimalArthropodMan Cycle Japanese encephalitis The reservoir is in an animal, The virus is maintained in nature in a transmission cycle involving the arthropod vector and animal Man bees infected incidentally Department of Microbiology, Harbin Medical University 登革病毒 Dengue Virus Department of Microbiology, Harbin Medical University 登革病毒 Dengue Virus ? 登革病毒感染引起登革熱 ? 流行于熱帶、亞熱帶地區(qū),特別是東南亞、西太平洋及中南美洲 ? 我國于 1978年廣東佛山首次發(fā)現(xiàn)本病,以后在海南島及廣西等地均有發(fā)現(xiàn) Department of Microbiology, Harbin Medical University Department of Microbiology, Harbin Medical University 生物學(xué)性狀 ? 呈啞鈴狀、棒狀或球形 ? 55nm, +ssRNA, 有包膜 ? 4個(gè)血清型,有交叉反應(yīng) Department of Microbiology, Harbin Medical University 傳播