Natural Infection of Aedes aegypti by Chikungunya and Dengue type 2 Virus in a Transition Area of North-Northeast Brazil

Dengue fever, chikungunya, and Zika are diseases caused by viruses transmitted by and . In Brazil, the number of human infections is high, but few studies are performed in mosquito vectors. This study aimed to investigate the presence of Zika, Dengue and Chikungunya viruses in and from the municipal...

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Published in:	Viruses Vol. 11; no. 12; p. 1126
Main Authors:	Aragão, Carine Fortes, Pinheiro, Valéria Cristina Soares, Nunes Neto, Joaquim Pinto, Silva, Eliana Vieira Pinto da, Pereira, Glennda Juscely Galvão, Nascimento, Bruna Laís Sena do, Castro, Karoline da Silva, Maia, Ariadne Mendonça, Catete, Clistenes Pamplona, Martins, Lívia Carício, Tadei, Wanderli Pedro, Silva, Sandro Patroca da, Cruz, Ana Cecília Ribeiro
Format:	Journal Article
Language:	English
Published:	Switzerland MDPI AG 05-12-2019 MDPI
Subjects:	Aedes - virology Aedes aegypti Aedes albopictus Animals Brazil - epidemiology Chikungunya Fever - epidemiology Chikungunya Fever - transmission Chikungunya Fever - virology Chikungunya virus Chikungunya virus - classification Chikungunya virus - isolation & purification Chikungunya virus - physiology Dengue - epidemiology Dengue - transmission Dengue - virology Dengue fever Dengue hemorrhagic fever Dengue Virus - classification Dengue Virus - isolation & purification Dengue Virus - physiology Disease Disease transmission Epidemics Epidemiology Female Genomes Genotype Genotypes Geography Humans Infections Male Mosquito Vectors - virology Mosquitoes Phylogeny Real-Time Polymerase Chain Reaction Taxonomy Vectors Viruses Brazil United States > US Dengue virus Aedes Chikungunya virus arbovirus
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Summary:	Dengue fever, chikungunya, and Zika are diseases caused by viruses transmitted by and . In Brazil, the number of human infections is high, but few studies are performed in mosquito vectors. This study aimed to investigate the presence of Zika, Dengue and Chikungunya viruses in and from the municipalities of Alto Alegre, Caxias, Codó, and São Mateus do Maranhão, located in the state of Maranhão, Northeast Brazil. The mosquitoes were collected with a mechanical aspirator, identified, triturated, and then submitted to RNA extraction and RT-qPCR. The positive samples were confirmed by virus isolation and genome sequencing. Three hundred and forty-eight (176 males and 172 females) and 12 (eight males and four females) were collected and tested. was the only vector positive in two municipalities-Codó, with detection of (CHIKV) belonging to the East-Central-South African genotype, and in Caxias, with detection of (DENV)-2 belonging to the Asian/American genotype. The detection of CHIKV and DENV-2 is evidence that those viruses are maintained in arthropod vectors, and shows the epidemiological risk in the area for chikungunya cases and a possible increase of severe dengue cases, associated with the occurrence of dengue hemorrhagic fever.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1999-4915 1999-4915
DOI:	10.3390/v11121126