Author:
Gaye Amy,Ndiaye Tolla,Sy Mouhamad,Deme Awa B.,Thiaw Alphonse B.,Sene Aita,Ndiaye Cheikh,Diedhiou Younouss,Mbaye Amadou M.,Ndiaye Ibrahima,Tomkins-Tinch Christopher,Gomis Jules F.,Badiane Aida S.,MacInnis Bronwyn,Park Daniel J.,Ndiaye Mouhamadou,Sy Ngayo,Sabeti Pardis C.,Siddle Katherine J.,Ndiaye Daouda
Abstract
AbstractDengue virus is a major and rapidly growing public health concern in tropic and subtropic regions across the globe. In late 2018, Senegal experienced its largest dengue virus outbreak to date, covering several regions. However, little is known about the genetic diversity of dengue virus (DENV) in Senegal. Here we report complete viral genomes from 17 previously undetected DENV cases from the city of Thiès. In total we identified 19 cases of DENV in a cohort of 198 individuals with fever collected in October and November 2018. We detected 3 co-circulating serotypes; DENV 3 was the most frequent accounting for 11/17 sequences (65%), 4 (23%) were DENV2 and 2 (12%) were DENV1. Sequences were most similar to recent sequences from West Africa, suggesting ongoing local circulation of viral populations; however, detailed inference is limited by the scarcity of available genomic data. We did not find clear associations with reported clinical signs or symptoms, highlighting the importance of testing for diagnosing febrile diseases. Overall, these findings expand the known range of DENV in Senegal, and underscore the need for better genomic characterization of DENV in West Africa.
Publisher
Springer Science and Business Media LLC
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