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Journal Publication

Time to Harmonize Dengue Nomenclature and Classification

This publication appears in: Viruses

Authors: P. Libin, L. Cuypers, P. Simmonds, A. Nowé, J. Muñoz-Jordán, L. Alcantara, A. Vandamme, G. Santiago and K. Theys

Volume: 10

Issue: 10

Number of Pages: 7

Publication Date: Oct. 2018


Abstract:

Dengue virus (DENV) is estimated to cause 390 million infections per year worldwide. A quarter of these infections manifest clinically and are associated with a morbidity and mortality that put a significant burden on the affected regions. Reports of increased frequency, intensity, and extended geographical range of outbreaks highlight the virus’s ongoing global spread. Persistent transmission in endemic areas and the emergence in territories formerly devoid of transmission have shaped DENV’s current genetic diversity and divergence. This genetic layout is hierarchically organized in serotypes, genotypes, and sub-genotypic clades. While serotypes are well defined, the genotype nomenclature and classification system lack consistency, which complicates a broader analysis of their clinical and epidemiological characteristics. We identify five key challenges: (1) Currently, there is no formal definition of a DENV genotype (2) Two different nomenclature systems are used in parallel, which causes significant confusion (3) A standardized classification procedure is lacking so far (4) No formal definition of sub-genotypic clades is in place (5) There is no consensus on how to report antigenic diversity. Therefore, we believe that the time is right to re-evaluate DENV genetic diversity in an essential effort to provide harmonization across DENV studies.

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