One of the most remarkable features of the SARS-CoV-2 Variants of Concern (VOC) is the
unusually large number of mutations they carry. However, the specific factors that drove the …

Commencing in December 2019 with the emergence of severe acute respiratory syndrome
coronavirus 2 (SARS-CoV-2), three years of the coronavirus disease 2019 (COVID-19) …

Background In early 2021, the SARS-CoV-2 lineage B. 1.1. 7 (Alpha variant) became
dominant across large parts of the world. In Denmark, comprehensive and real-time test …

The second wave of COVID-19 occurred in South America in early 2021 and was mainly
driven by Gamma and Lambda variants. In this study, we aimed to describe the emergence …

Two severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants associated
with increased transmission and immune evasion, P. 1 and P. 2, emerged in Brazil and …

SARS-CoV-2 is the new coronavirus responsible for COVID-19 disease. The first two cases
of COVID-19 were detected in Venezuela on March 13, 2020. The aim of this study was the …

This article discusses the epidemic situation of Covid-19 in Brazil, in the face of the
emergence of a new strain called P. 1, which is more transmissible and may be associated …

We report on the sequencing of 74,348 SARS-CoV-2 positive samples collected across the
United States and show that the Delta variant, first detected in the United States in March …

Abstract Objective Variants of concern (VOCs) associated with relatively high transmissibility
appear to be rapidly spreading in Gabon. Therefore, it is imperative to understand the …

Background The coronavirus disease 2019 (COVID-19) pandemic had and is still having a
tremendous impact on people all over the world, but it has been particularly harsh in South …