Abstract
Over 60,500 dengue cases were reported in the state of Espírito Santo (ES), Brazil, between 1995 and 1998. The study's purpose was to identify whether Aedes albopictus was transmitting the dengue virus during an epidemic in the locality of Vila Beth nia (Viana County),Vitória, ES. From April 3 to 9, 1998, blood and serum samples were collected daily for virus isolation and serological testing. Four autochthonous cases were confirmed through DEN 1 virus isolation and two autochthonous cases through MAC ELISA testing. Of 37 Ae. aegypti and 200 Ae. albopictus adult mosquitoes collected and inoculated, DEN1 virus was isolated only from a pool of two Ae. aegypti female mosquitoes. The study results suggest that Ae. albopictus still cannot be considered an inter-human vector in dengue epidemics in Brazil.
Highlights
Since the introduction of Aedes albopictus in Brazil,[1] the vector potentiality of this species has remained a controversial issue.[2]
Recent evidence showed that dengue virus may be vertically transmitted by this species in nature* but no data were available on its man-to-man vector potentiality
Eleven acute febrile human cases occurred during the survey period, of which 4 were confirmed by isolation of DEN 1 virus, and 2 by MAC ELISA
Summary
Since the introduction of Aedes albopictus in Brazil,[1] the vector potentiality of this species has remained a controversial issue.[2]. The study presents the findings of an entomo-epidemiological survey conducted from April 3 to 9, 1998 at the ending phase of an outbreak of more than 60,500 cases in the locality of Vila Bethânia, Viana county, southeast of the capital Vitória, state of Espírito Santo.
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