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Am. J. Trop. Med. Hyg., 40(1), 1989, pp. 108-113
Copyright © 1989 by The American Society of Tropical Medicine and Hygiene

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Transovarial Transmission of Gamboa Virus in a Tropical Mosquito, Aedeomyia squamipennis

Bedsy E. Dutary, John L. Petersen, Pauline H. Peralta AND Robert B. Tesh*
Gorgas Memorial Laboratory, Panama
* Yale Arbovirus Research Unit, Yale University, New Haven, Connecticut

We report transovarial transmission of Gamboa virus (Bunyavirus) in Aedeomyia squamipennis, a tropical mosquito which is active and bloodfeeding throughout the year. Gamboa virus was isolated during each of the 28 months of the study from every mosquito stage, including eggs, demonstrating that vertical transmission is a maintenance mechanism of this virus. The overall minimum infection rate was 5.1/1,000 mosquitoes. Identification of the 567 isolates by neutralization indicated that ≥2 serotypes or subtypes of Gamboa virus circulate at the study site.

Accepted for publication August 15, 1988.






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Copyright © 1989 by the American Society of Tropical Medicine and Hygiene.