AJTMH Transactions of the Royal Society of Tropical Medicine and Hygiene
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Am. J. Trop. Med. Hyg., 33(6), 1984, pp. 1248-1250
Copyright © 1984 by The American Society of Tropical Medicine and Hygiene

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Natural Transovarial Transmission of Dengue 4 Virus in Aedes Aegypti in Trinidad

Barbara Hull, Elisha Tikasingh, Mark de Souza AND Raymond Martinez
Caribbean Epidemiology Centre (PAHO/WHO), P.O. Box 164, Port of Spain, Trinidad and Tobago

The isolation of dengue 4 virus from adult Aedes aegypti, reared from eggs collected in nature, is reported for the first time. From the locality where the isolate was made, 25 pools consisting of 1,848 Ae. aegypti reared from eggs were processed. In this study, 10 different localities were sampled and a total of 10,957 Ae. aegypti adults, collected as eggs or larvae in nature, were processed for virus isolation. From a total of 158 mosquito pools tested, one recovery of dengue 4 virus was made. The isolation of dengue 4 virus from this field-collected material gives further evidence that transovarial transmission of dengue viruses occurs in nature.

Accepted for publication April 13, 1984.






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Copyright © 1984 by the American Society of Tropical Medicine and Hygiene.