小盾纤恙螨自然感染流行性出血热病毒经期传播及其体内增殖的初步观察  

Preliminary Observation on EHFV's trans-Stadial Transmission and Proliferation in Leptotrombidium(L.)Scutellare Infected Naturally with EHFV

作　　者：张云[1] 李先富[1] 陶开华[1] 唐家琪[1] 吴光华[1] 张家驹 姜克俭[1] 甘粤怀 周燕平 田俊喜 

机构地区：[1]南京军区军事医学研究所,陕西省卫生防疫站

出　　处：《中国公共卫生学报》1995年第3期176-179,共4页

基　　金：国家自然科学基金

摘　　要：为探讨小盾纤恙螨在ＥＨＦＶ传播中的媒介意义，观察了在该螨中ＥＨＦＶ经期传播的直接证据和能否在螨体内增殖。方法是将螨幼虫、若虫分批进行ＥＨＦＶ分离，测定病毒的ＴＣＩＤ（５０）／ｍｌ滴度。结果在该螨幼虫期和若虫期均分离到ＥＨＦＶ，但在幼虫演变到若虫前４０天左右，ＥＨＦＶ可在其体内消失，以后再度出现；病毒滴度在幼虫期逐渐下降，随后再度上升。结果证明ＥＨＦＶ可经期传播，并在螨体内有增殖的现象。in order to gain direct evidences on trans-stadial transmission and proliferation in mites .we isolated EHFV from larva.nymph and measured its TCID(50) titre. EHFV in the infected mites which were at larva stage and adult stage were positive,but EHFV in the mites which were about 40 days before nymphwere negative, after then EHFV were again positive.The titre EHFV'of in the infected mites became graduately low at midle-stage of larva and then rose at nymph stage. The results showed that EHFV can be transmited from stage to stage and proliferatd in mites.

关 键 词：小盾纤恙螨 流行性出血病毒 增殖 流行性出血热 

分 类 号：R512.8[医药卫生—内科学]