Detection and genetic characterization of arboviruses and other viruses from mosquitoes collected in Southeastern and Central Senegal, October 2022

Mosquito-associated virus distribution and genetic data are incomplete in Senegal. This study updates information on virus diversity, distribution, and phylogenetic relationships through entomological and molecular surveillance. Mosquitoes were collected in October 2022 from 10 districts in Senegal, identified morphologically, and tested using qRT-PCR. Positive samples were sequenced for genetic characterisation.
A total of 42 virus isolates belonging to 7 viruses (Bagaza virus (BAGV), Barkedji virus, Sindbis virus 5SINV), Usutu virus (USUV), Dezidougou virus, Densovirus, and Pestivirus A (PESVA)) were detected in 6 mosquito species (Mansonia uniformis, Culex neavei, Anopheles coustani, Cx. cinereus, Aedes aegypti, and Ae. vexans). Most detections (92.9%) occurred in mosquitoes from ponds. BAGV and SINV were recorded for the first time in southeastern Senegal, and PESVA was detected in field-collected mosquitoes for the first time. Phylogenetic analyses in the associated article, reveal..., , # Detection and genetic characterization of arboviruses and other viruses from mosquitoes collected in Southeastern and Central Senegal, October 2022

Dataset DOI: [10.5061/dryad.3n5tb2rwf](10.5061/dryad.3n5tb2rwf)

## Description of the data and file structure

Mosquitoes were collected in 10 districts in the Kedougou (Dindefelo, Bandafassi, Fongolimbi, Dimboli and Tomboronkoto) and Linguere areas (Barkedji, Dodji, Thiel, Gassane and Thiargny) located respectively in southeastern and central Senegal in October 2022. Mosquitoes were tested for viral infection.

### Files and variables

#### File: Database_Diallo_et_al._2025.csv

**Description:** This dataset contains detailed records of mosquito collections conducted in October 2022 across ten districts in Senegal, including species identification, collection sites, habitat types, and viral screening results. The dataset can be used to examine mosquito species distribution, virus–vector associations, and habitat-specific virus occurrenc...,