Introduction The Delta variant posed an increased risk to global public health and rapidly
replaced the pre-existent variants worldwide. In this study, the genetic diversity and the …

Delta VOC is highly diverse with more than 120 sublineages already described as of
November 30, 2021. In this study, through active monitoring of circulating severe acute …

Different factors influence the spread of SARS-CoV-2, from the inherent transmission
capabilities of the different variants to the control measurements put in place. Here we …

The analyses of genetic traits, dispersion patterns and phylogenomics are essential for
understanding the evolutionary forces driving SARS-CoV-2 viruses in these three years of …

The sharp increase of COVID-19 cases in late 2020 has made Brazil the new epicenter of
the ongoing SARS-CoV-2 pandemic. The novel viral lineages P. 1 (Variant of Concern …

Brazil is one of the nations most affected by Coronavirus disease 2019 (COVID-19). The
introduction and establishment of new virus variants can be related to an increase in cases …

Abstract Background The SARS-CoV-2 Delta variant was first identified in the US in March
2021 and has rapidly become the predominant lineage across the US due to increased …

In this study, we analyzed 340 whole genomes of SARS-CoV-2, which were sampled
between April and November 2020 in 33 cities of Rio Grande do Sul, South Brazil. We …

We report 3 cases of severe COVID-19 due to the SARS-CoV-2 P. 1 lineage in a familial
cluster detected in Salvador, Bahia–Brazil. All cases were linked to travel by family members …

We report the first local transmission of the Delta SARS-CoV-2 variant in mainland China. All
167 infections could be traced back to the first index case. The investigation on daily …