The SARS-CoV-2 variant of concern (VOC) Delta was first detected in India in October 2020.
The first imported cases of the Delta variant in Brazil were identified in April 2021 in the …

The emergence of Variants of Concern (VOC) presenting an unusual number of new
mutations is one of the most remarkable features of SARS-CoV-2. The Delta variant, since its …

The dissemination of the Delta VOC in Brazil is still unclear, despite the frequent reports of
isolated cases from different Brazilian states. In this report we characterize the dissemination …

The year of 2021 was marked by the emergence and dispersal of a number of SARS-CoV-2
lineages, resulting in the 'third wave'of COVID-19 in several countries despite the level of …

As 2021 comes to a close, the advances in vaccination against COVID-19 allow the world to
glimpse an end to the pandemic. In Brazil, the disease has cost more than 600,000 lives and …

The emergence and global dissemination of Severe Acute Respiratory Syndrome virus 2
(SARS-CoV-2) variants of concern (VOCs) have been described as the main factor driving …

Coronavirus disease 2019 (COVID-19) pandemic has caused immeasurable impacts on the
health and socioeconomic system. The real-time identification and characterization of new …

The SARS-CoV-2 variants of concern (VOCs) Delta and Omicron spread globally during mid
and late 2021, respectively. In this study, we compare the dissemination dynamics of these …

Recently, the highest wave of SARS-CoV-2 epidemic occurred since the beginning of the
pandemic in Brazil was registered in Rio Grande do Sul (RS) State, Southern Brazil …

Abstract The Severe Acute Respiratory Syndrome coronavirus 2 (SARS-CoV-2) is the
causative agent of an unprecedented worldwide pandemic. Brazil demonstrates one of the …