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Detection of dicistroviruses RNA in blood of febrile Tanzanian children.

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Bibliographic Details
Title: Detection of dicistroviruses RNA in blood of febrile Tanzanian children.
Authors: Cordey, S., Laubscher, F., Hartley, M.A., Junier, T., Pérez-Rodriguez, F.J., Keitel, K., Vieille, G., Samaka, J., Mlaganile, T., Kagoro, F., Boillat-Blanco, N., Mbarack, Z., Docquier, M., Brito, F., Eibach, D., May, J., Sothmann, P., Aldrich, C., Lusingu, J., Tapparel, C., D'Acremont, V., Kaiser, L.
Publication Year: 2025
Collection: Université de Lausanne (UNIL): Serval - Serveur académique lausannois
Subject Terms: Child, Preschool, Cohort Studies, Female, Fever/blood, Fever/virology, Humans, Infant, Male, Phylogeny, Polymerase Chain Reaction, RNA, Viral/blood, Tanzania, Virus Diseases/blood, Virus Diseases/genetics, Virus Diseases/virology, Viruses/classification, Viruses/isolation & purification, Dicistrovirus, Tanzanian children, de novo analysis, sera, viremia
Description: Fever is the leading cause of paediatric outpatient consultations in Sub-Saharan Africa. Although most are suspected to be of viral origin, a putative causative pathogen is not identified in over a quarter of these febrile episodes. Using a de novo assembly sequencing approach, we report the detection (15.4%) of dicistroviruses (DicV) RNA in sera collected from 692 febrile Tanzanian children. In contrast, DicV RNA was only detected in 1/77 (1.3%) plasma samples from febrile Tanzanian adults, suggesting that children could represent the primary susceptible population. Estimated viral load by specific quantitative real-time RT-PCR assay ranged from < 1.32E3 to 1.44E7 viral RNA copies/mL serum. Three DicV full-length genomes were obtained, and a phylogenetic analyse on the capsid region showed the presence of two clusters representing tentative novel genus. Although DicV-positive cases were detected throughout the year, a significantly higher positivity rate was observed during the rainy season. This study reveals that novel DicV RNA is frequently detected in the blood of Tanzanian children, paving the way for further investigations to determine if DicV possibly represent a new agent in humans.
Document Type: article in journal/newspaper
File Description: application/pdf
Language: English
ISSN: 2222-1751
Relation: Emerging Microbes & Infections; https://iris.unil.ch/handle/iris/250562; serval:BIB_EC0E536871A0; 000464968100001
DOI: 10.1080/22221751.2019.1603791
Availability: https://iris.unil.ch/handle/iris/250562
https://doi.org/10.1080/22221751.2019.1603791
Accession Number: edsbas.F3CD1FCF
Database: BASE
Description
Abstract:Fever is the leading cause of paediatric outpatient consultations in Sub-Saharan Africa. Although most are suspected to be of viral origin, a putative causative pathogen is not identified in over a quarter of these febrile episodes. Using a de novo assembly sequencing approach, we report the detection (15.4%) of dicistroviruses (DicV) RNA in sera collected from 692 febrile Tanzanian children. In contrast, DicV RNA was only detected in 1/77 (1.3%) plasma samples from febrile Tanzanian adults, suggesting that children could represent the primary susceptible population. Estimated viral load by specific quantitative real-time RT-PCR assay ranged from < 1.32E3 to 1.44E7 viral RNA copies/mL serum. Three DicV full-length genomes were obtained, and a phylogenetic analyse on the capsid region showed the presence of two clusters representing tentative novel genus. Although DicV-positive cases were detected throughout the year, a significantly higher positivity rate was observed during the rainy season. This study reveals that novel DicV RNA is frequently detected in the blood of Tanzanian children, paving the way for further investigations to determine if DicV possibly represent a new agent in humans.
ISSN:22221751
DOI:10.1080/22221751.2019.1603791