Aedes aegypti from temperate regions of South America are highly competent to transmit dengue virus.

ABSTRACT:

Background

Aedes aegypti is extensively spread throughout South America where it has been responsible for large dengue epidemics during the last decades. Intriguingly, dengue transmission has not been reported in Uruguay and is essentially prevalent in subtropical northern Argentina which borders Uruguay.

Methods

We assessed vector competence for dengue virus (DENV) of Ae. aegypti populations collected in subtropical Argentina (Corrientes) as well as temperate Uruguay (Salto) and Argentina (Buenos Aires) in 2012 using experimental oral infections with DENV-2. Mosquitoes were incubated at 28 °C and examined at 14 and 21 days p.i. to access viral dissemination and transmission. Batches of the Buenos Aires mosquitoes were also incubated at 15 °C and 20 °C.

Results

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SUBMITTER: Lourenco-de-Oliveira R 

PROVIDER: S-EPMC3929315 | biostudies-literature | 2013 Dec

REPOSITORIES: biostudies-literature