Background Emergence of variants with specific mutations in key epitopes in the spike
protein of SARS-CoV-2 raises concerns pertinent to mass vaccination campaigns and use of …

Background: The impact of SARS-CoV-2 variants of concern (VOCs) on disease severity is
unclear. In this retrospective cohort study, we compared outcomes of patients infected with …

Recent months have seen surges of SARS-CoV-2 infection across the globe along with
considerable viral evolution. Extensive mutations in the spike protein of variants B. 1.1. 7 …

Background: The more infectious SARS-CoV-2 virus lineage B. 1.1. 7, rapidly spread in
Europe after December 2020, and a concern of B. 1.1. 7 causing more severe disease has …

Background The more infectious SARS-CoV-2 lineage B. 1.1. 7 rapidly spread in Europe
after December, 2020, and a concern that B. 1.1. 7 could cause more severe disease has …

The sudden rise in COVID-19 cases in 2020 and the incessant emergence of fast-spreading
variants have created an alarming situation worldwide. Besides the continuous …

Summary Background The SARS-CoV-2 variant B. 1.1. 7 was first identified in December,
2020, in England. We aimed to investigate whether increases in the proportion of infections …

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 …

As of January of 2021, the highly transmissible B. 1.1. 7 variant of SARS-CoV-2, which was
first identified in the United Kingdom (UK), has gained a strong foothold across the world …

Rapid Emergence and Epidemiologic Characteristics of the SARS-CoV-2 B.1.526 Variant —
New York City, New York, January 1–April 5, 2021 | MMWR Skip directly to site content Skip …