Please use this identifier to cite or link to this item: https://www.arca.fiocruz.br/handle/icict/22814
Title: Dengue serotype circulation in natural populations of Aedes aegypti
Authors: Santos, Taíssa Pereira dos
Cruz, Oswaldo Gonsalvez
Silva, Keli Antunes Barbosa da
Castro, Márcia Gonçalves de
Brito, Anielly Ferreira de
Maspero, Renato Cesar
Alcântra, Rosilene de
Santos, Flávia Barreto dos
Honorio, Nildimar A.
Oliveira, Ricardo Lourenço de
Affilliation: Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Mosquitos Transmissores de Hematozoários. Rio de Janeiro, RJ. Brasil.
Fundação Oswaldo Cruz. Programa de Computação Científica. Rio de Janeiro, RJ. Brasil / Prefeitura Municipal do Rio de Janeiro. Secretaria Municipal de Saúde. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Mosquitos Transmissores de Hematozoários. Rio de Janeiro, RJ. Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Mosquitos Transmissores de Hematozoários. Rio de Janeiro, RJ. Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Mosquitos Transmissores de Hematozoários. Rio de Janeiro, RJ. Brasil.
Prefeitura Municipal do Rio de Janeiro. Secretaria Municipal de Saúde. Rio de Janeiro, RJ, Brasil.
Prefeitura Municipal do Rio de Janeiro. Secretaria Municipal de Saúde. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia Molecular de Flavivírus. Rio de Janeiro, RJ. Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Mosquitos Transmissores de Hematozoários. Rio de Janeiro, RJ. Brasil / Fundação Oswaldo Cruz. Núcleo Operacional Sentinela de Mosquitos Vetores. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Mosquitos Transmissores de Hematozoários. Rio de Janeiro, RJ. Brasil.
Abstract: Ae. aegypti is the main vector of dengue (DENV), Zika (ZIKV), and chikungunya (CHIKV) viruses. The transmission dynamics of these arboviruses, especially the arboviral circulation in the mosquito population during low and high transmission seasons in endemic areas are still poorly understood. We conducted an entomological survey to determine dengue infection rates in Ae. aegypti and Aedes albopictus. These collections were performed in 2012–2013 during a Rio de Janeiro epidemic, just before the introduction and spread of ZIKV and CHIKV in the city. MosquiTrap© and BG-Sentinel traps were installed in three fixed and seven itinerant neighborhoods each month over ten months. Mosquitoes were in supernatants pools tested and individually confirmed for DENV infection using RT-PCR. A total of 3053 Aedes mosquitos were captured and Ae. aegypti was much more frequent (92.9%) than Ae. albopictus (6.8%). Ae. aegypti females accounted for 71.8% of captured mosquitoes by MosquitTrap© and were the only species found naturally infected with DENV (infection rate =0.81%). Only one Ae. aegypti male, collected by BG-sentinel, was also tested positive for DENV. The peak of DENV-positive mosquitoes coincided the season of the highest incidence of human cases. The most common serotypes detected in mosquitoes were DENV-3 (24%) and DENV-1 (24%), followed by DENV-4 (20%), DENV-2 (8%) and DENV-1 plus DENV4 (4%), while 95% of laboratory-confirmed human infections in the period were due to DENV-4. These contrasting results suggest silent maintenance of DENV serotypes during the epidemics, reinforcing the importance of entomological and viral surveillance in endemic areas.
Keywords: Dengue serotypes
Arbovirus detection
Infected mosquitoes
keywords: Serótipos de dengue
Detecção de Arbovírus
Mosquitos infectados
Issue Date: 2017
Publisher: Elsevier
Citation: SANTOS.Taíssa Pereira dos; et al. Dengue serotype circulation in natural populations of Aedes aegypti. Acta Tropica, v.176, p.140–143, 2017.
DOI: 10.1016/j.actatropica.2017.07.014
ISSN: 0001-706X
Copyright: restricted access
Appears in Collections:Presidência Fiocruz – Artigos de Periódicos
IOC - Artigos de Periódicos

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