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J Virol . Evolutionary deletions within the SARS-CoV-2 genome as signature trends for virus fitness and adaptation

tetano

Editor, Senior Moderator
J Virol


. 2023 Dec 13:e0140423.
doi: 10.1128/jvi.01404-23. Online ahead of print. Evolutionary deletions within the SARS-CoV-2 genome as signature trends for virus fitness and adaptation

Pedro Miguel Carneiro Jeronimo[SUP] 1 [/SUP], Cleber Furtado Aksenen[SUP] 1 [/SUP], Igor Oliveira Duarte[SUP] 1 [/SUP], Roberto D Lins[SUP] 2 [/SUP], Fabio Miyajima[SUP] 1 [/SUP]



Affiliations
Abstract

Coronaviruses are large RNA viruses that can infect and spread among humans and animals. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), responsible for coronavirus disease 2019, has evolved since its first detection in December 2019. Deletions are a common occurrence in SARS-CoV-2 evolution, particularly in specific genomic sites, and may be associated with the emergence of highly competent lineages. While deletions typically have a negative impact on viral fitness, some persist and become fixed in viral populations, indicating that they may confer advantageous benefits for the virus's adaptive evolution. This work presents a literature review and data analysis on structural losses in the SARS-CoV-2 genome and the potential relevance of specific signatures for enhanced viral fitness and spread.

Keywords: SARS-CoV-2; deletions; evolutionary mechanisms; structural mutations; viral adaptation.

 
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