Dengue serotype circulation in natural populations of Aedes aegypti

Acta Tropica
Taissa Pereira Dos SantosRicardo Lourenço-de-Oliveira

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 hu...Continue Reading

References

Feb 3, 2018·Parasites & Vectors·Victor Henrique Ferreira-de-Lima, Tamara Nunes Lima-Camara
Oct 1, 2020·Revista Da Sociedade Brasileira De Medicina Tropical·Rafael Silva Dos AnjosNuno de Sousa-Neves
Dec 2, 2017·Pest Management Science·Emanuelle GoellnerOnilda Santos da Silva
Mar 4, 2020·Scientific Reports·Victor Henrique Ferreira-de-LimaTamara Nunes Lima-Camara
Aug 30, 2018·Memórias do Instituto Oswaldo Cruz·Karine Pedreira PadilhaRafaela Vieira Bruno

Related Concepts

Dengue Fever
Chikungunya Fever
Virus
Seasonal Variation
Insect Vectors
Laboratory
Reverse Transcriptase Polymerase Chain Reaction
Serogroup
Contrast Used
Genetic Vectors