SciELO - Scientific Electronic Library Online

vol.19 issue2Evaluation of primers reported for KDR detection in Anopheles species collected in the departments of Caaguazú and Alto Paraná in ParaguayLevel of caries severity in children from 5 months to 3 years who attended the Pediatric Dentistry Service of the Catholic University, Guairá Campus in the period 2017-2018 author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




  • Have no cited articlesCited by SciELO

Related links

  • Have no similar articlesSimilars in SciELO


Memorias del Instituto de Investigaciones en Ciencias de la Salud

On-line version ISSN 1812-9528


CARDOZO, Fátima et al. Implementation of a flavivirus detection system in mosquitoes. Mem. Inst. Investig. Cienc. Salud [online]. 2021, vol.19, n.2, pp.32-40. ISSN 1812-9528.

Flaviviruses are viruses transmitted by arthropods, mainly mosquitoes. They can cause diseases in humans and animals, they also include specific insect viruses that only infect and replicate in insects, not in vertebrates. In Paraguay, dengue, yellow fever, and Zika viruses were detected in human infections, but studies of flaviviruses in mosquitoes are still scarce. Therefore, the objective of the present study was the implementation of a flavivirus detection system in mosquitoes at IICS-UNA. First, trainings on collection, pool preparation and processing by conventional RT-PCR techniques were organized by international experts for local professionals (biochemists and biologists). In addition, data log sheets and sample transport control forms from the collection sites to the IICS were implemented. A total of 201 pools of 1 to 35 mosquitoes were prepared, each grouped by species, locality, among others. To ensure the integrity of the extracted RNA, an internal control (Actin-1) detection was performed, all pools being positive for it; 91/201 pools were positive for flaviviruses. The sequencing of 19/91 pools positive for flavivirus was carried out, identifying flavivirus in all cases of insects (mainly detecting Culex Flavivirus, cell fusing agents Flavivirus and Kamiti river virus), evidencing the high distribution of these viruses. These results demonstrate that it was feasible to implement the flavivirus detection system in mosquitoes, which could contribute to strengthen the detection, surveillance and control of these viruses, as well as, the knowledge about the ecological importance of insect flaviviruses.

Keywords : flaviviruses; mosquitoes; RT-PCRs; Paraguay.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )