| 罗庆洪,林镇城,郝瑞峰,林矛,杨少娟,谭丽霞,王炎业,陈文洲,陈玉本,甘保杰.致倦库蚊传播登革热研究[J].Chinese journal of Epidemiology,1993,14(2):67-69 |
| 致倦库蚊传播登革热研究 |
| A Study on Transmission of Dengue Virus by Culex fatigans |
| Received:August 20, 1990 Revised:August 27, 1992 |
| DOI： |
| KeyWord: 登革病毒 致倦库蚊 |
| English Key Word: Dengue virus Culex fatigans |
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| Abstract: |
| 用实验室孵化饲养的致倦库蚊(Culex fatigans)与埃及伊蚊[Aedes(S.)aegypti]、白纹伊蚊[Al.(S.)albopictus]同时叮咬发病2天内急性期登革热病人,于感染后不同时间采三种蚊标本分别作病毒分离、病毒量测定及传播试验,结果致倦库蚊感染病毒阳性率为5.13%(2/39),平均病毒量为2.42lgTCID50,传播试验阳性率为3.30%(3/91),由此证明致倦库蚊可以自然感染登革病毒且感染后具有传播能力,但阳性率和传播率均显著低于埃及伊蚊和白纹伊蚊,表明致倦库蚊作为登革热媒介作用不如上述两种伊蚊重要,但在登革热流行区中,如果致倦库蚊的数量较大时仍能构成一定威胁。 |
| English Abstract: |
| Patients with acute dengue fever within 2 days of onset were simultaneously bitten by Culex fatigans, Aedes aegypti and Aedes albopictus, which were fed and incubated in the laboratory. Isolation and quantitative assay of dengue virus and transmission experiment were conducted on specimens collected from 3 kinds of mosquitoes at different time. The result showed a positive rate of 5.13% (2/39) and an average viral titer of 2.41 logTCID50, for Culex fatigans, which indicates that Culex fatigans might be naturally infected with dengue virus and might transmit dengue virus after infection. But the positive rate and infection rate of Culex fatigans were significantly lower than those of Aedes aegypti and Aedes albopitus, which indicates that Culex fatigans might play a less important role in the transmission of dengue virus. |
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