Evidence of vertical transmission of Zika virus in field-collected eggs of Aedes aegypti in the Brazilian Amazon

PLoS Neglected Tropical Diseases
Cristiano Fernandes da CostaFelipe Gomes Naveca

Abstract

Arboviruses are viruses transmitted to humans and other animals by the bite of hematophagous arthropods. Infections caused by chikungunya virus (CHIKV), dengue virus (DENV), Zika virus (ZIKV), and the deadlier yellow fever virus (YFV) are current public health problems in several countries, mainly those located in tropical and subtropical regions. One of the main prevention strategies continues to be vector control, with the elimination of breeding sites and surveillance of infested areas. The use of ovitraps for Aedes mosquitos monitoring has already demonstrated promising results, and maybe be also useful for arboviral surveillance. This work aimed to detect natural vertical transmission of arboviruses in Aedes aegypti and Aedes albopictus. Mosquito egg collection was carried out using ovitraps in Itacoatiara, a mid-size city in Amazonas state, Brazil. Collected eggs were allowed to hatch and larvae were tested for CHIKV, DENV, and ZIKV RNA by RT-qPCR. A total of 2,057 specimens (1,793 Ae. aegypti and 264 Ae. albopictus), in 154 larvae pools were processed. Results showed one positive pool for CHIKV and one positive pool for ZIKV. The active ZIKV infection was further confirmed by the detection of the negative-strand viral RN...Continue Reading

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Citations

Jan 23, 2019·PLoS Biology·Chantal B F VogelsNathan D Grubaugh
Apr 5, 2019·PLoS Neglected Tropical Diseases·Leon E HugoFrancesca D Frentiu
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Datasets Mentioned

BETA
MG279550

Methods Mentioned

BETA
electrophoresis
genotyping
nucleic acid amplification

Software Mentioned

QGIS
PooledInfRate
Excel
BLAST Subtyping Tool
Biggerstaff

Related Concepts