Proposing a Systematic Lineage Classification Below the Genotype Level for Dengue Serotypes 1 and 2
Pereira, J. S.; Ribeiro, G.; de Souza, V. C.; Brcko, I. C.; Ribeiro, I. S.; De Lima, I. T. T.; Slavov, S. N.; Vessoni, S. C. S.; Sabbaga, M. C.; Lima, A. R. J.
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Dengue virus (DENV), a mosquito-borne flavivirus, is causing a significant outbreak in Brazil. The recent surge in complete DENV genome sequences necessitates a standardized classification system for an improved understanding of viral dynamics and transmission patterns. Traditionally, DENV classification relies on serotypes and genotypes but lacks a consensus for sub-genotype classification. This hinders comprehensive analyses of viral diversity. We address this gap by proposing a novel lineage classification system for DENV using a semi-automatic workflow, leveraging the use of complete genome sequences to classify and re-evaluate DENV genetic diversity. This system offers a more granular classification scheme compared to current methods. The proposed hierarchical nomenclature, incorporating serotype, genotype, subgenotype, lineage, and sublineage, facilitates precise tracking of viral introductions and evolutionary events. This information might have crucial implications for public health interventions, enabling more targeted control strategies and improved monitoring of vaccine effectiveness during future outbreaks.
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