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Mechanical Transmission of Rift Valley Fever Virus by Hematophagous Diptera
A. Lynn Hoch
A. Lynn Hoch
U.S. Army Medical Research Institute of Infectious Diseases, Fort Detrick, Frederick, Maryland 21701
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Thomas P. Gargan II
Thomas P. Gargan II
U.S. Army Medical Research Institute of Infectious Diseases, Fort Detrick, Frederick, Maryland 21701
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Charles L. Bailey
Charles L. Bailey
U.S. Army Medical Research Institute of Infectious Diseases, Fort Detrick, Frederick, Maryland 21701
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Experimental studies were conducted to determine if hematophagous Diptera were capable of mechanical transmission of Rift Valley fever (RVF) virus to laboratory animals. All species tested (Glossina morsitans, Aedes aegypti, Aedes taeniorhynchus, Culex pipiens, Stomoxys calcitrans, Lutzomyia longipalpis, and Culicoides variipennis) mechanically transmitted the virus to hamsters. Mechanical transmission rates for G. morsitans ranged from 0–100%, with the probability of mechanical transmission positively correlated with initial viremia titer and negatively correlated with the time after virus exposure. Mechanical transmission of RVF virus to lambs was demonstrated with both G. morsitans and Cx. pipiens. These findings demonstrated that mechanical transmission of RVF virus by hematophagous flies may contribute to the natural transmission and dissemination of this virus.
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| Past two years | Past Year | Past 30 Days | |
|---|---|---|---|
| Abstract Views | 1637 | 833 | 66 |
| Full Text Views | 60 | 6 | 0 |
| PDF Downloads | 65 | 6 | 0 |