Publications by authors named "Ademir Bentes Vieira Junior"
Zika virus (ZIKV) is transmitted to humans by the infectious bite of mosquitoes such as . In a city, the population control of mosquitoes is carried out according to alerts generated by different districts via the analysis of the mosquito index. However, we do not know whether, besides mosquito abundance, the susceptibility of mosquitoes could also diverge among districts and thus impact the dissemination and transmission of arboviruses.
View Article and Find Full Text PDFThe successful spread and maintenance of the dengue virus (DENV) in mosquito vectors depends on their viral infection susceptibility, and parameters related to vector competence are the most valuable for measuring the risk of viral transmission by mosquitoes. These parameters may vary according to the viral serotype in circulation and in accordance with the geographic origin of the mosquito population that is being assessed. In this study, we investigated the effect of DENV serotypes (1-4) with regards to the infection susceptibility of five Brazilian populations from Manaus, the capital of the state of Amazonas, Brazil.
View Article and Find Full Text PDFVertical Transmission of Zika Virus (Flaviviridae, Flavivirus) in Amazonian Aedes aegypti (Diptera: Culicidae) Delays Egg Hatching and Larval Development of Progeny.
J Med Entomol
October 2019
Article Synopsis
- Zika virus (ZIKV) is primarily transmitted to humans by Aedes aegypti and Aedes albopictus mosquitoes, and research is exploring whether the virus can also be passed vertically from infected female mosquitoes to their offspring.
- A colony of ZIKV and dengue virus-free mosquitoes was established in Manaus for experiments, revealing that ZIKV can be vertically transmitted to the F1 progeny, which showed high susceptibility to infection (96.7%).
- The infected offspring exhibited lower egg hatch rates and slower development compared to controls, suggesting that ZIKV infection can significantly alter the life cycle of Aedes aegypti and may play a crucial role in the virus's spread and maintenance in nature.
Background: Several tropical cities are permissive to Aedes aegypti and dengue virus (DENV) endemicity and have allowed for invasion and circulation of Zika virus (ZIKV) in the same areas. People living in arbovirus-endemic regions have been simultaneously infected with ≥2 arboviruses.
Methods: A.