Without modern medical management and vaccines, the severity of the Coronavirus
Disease 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome (SARS) …

The emergence of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) variants
in different continents is causing a major concern in human global health. These variants …

Objective To estimate the real world effectiveness of the Pfizer-BioNTech BNT162b2 and
Oxford-AstraZeneca ChAdOx1-S vaccines against confirmed covid-19 symptoms (including …

Abstract The SARS-CoV-2 lineage B. 1.1. 7, designated variant of concern (VOC) 202012/01
by Public Health England, was first identified in the UK in late summer to early autumn 2020 …

Objective To establish whether there is any change in mortality from infection with a new
variant of SARS-CoV-2, designated a variant of concern (VOC-202012/1) in December …

Resurgence of COVID-19 in Manaus, Brazil, despite high seroprevalence - The Lancet Skip to
Main Content Skip to Main Menu Advertisement The Lancet Journal Submit Article Log in …

Over the course of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
pandemic, the clinical, scientific, and public health communities have had to respond to new …

Emerging severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants have
raised concerns about resistance to neutralizing antibodies elicited by previous infection or …

Background The dynamics of vaccination against SARS-CoV-2 are complicated by age-
dependent factors, changing levels of infection, and the relaxation of non-pharmaceutical …

Following its emergence in late 2019, the spread of SARS-CoV-2, has been tracked by
phylogenetic analysis of viral genome sequences in unprecedented detail,–. Although the …