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28 cze 2024 · When these changes become significantly different to a previously detected virus, these new virus types are known as “variants.” To identify variants, scientists map the genetic material of viruses (known as sequencing) and then look for differences between them to see if they have changed.
13 gru 2021 · Lineage B.1.1.7 (the Alpha variant) became dominant in early 2021, but the association between transmissibility and risk factors, such as age of primary case and viral load remains poorly...
12 lis 2021 · SARS-CoV-2 variants of concern (VOC) B.1.1.7 (alpha) and B.1.351 (beta) show increased transmissibility and enhanced antibody neutralization resistance.
6 lut 2021 · But three variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have raised particular concerns. On Jan 21, 2021, the UK New and Emerging Respiratory Virus Threats Advisory Group (NERVTAG) issued a paper outlining the results from several preliminary analyses of B.1.1.7.
21 kwi 2021 · Emerging variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are of clinical concern. In a cohort of 417 persons who had received the second dose of BNT162b2 (Pfizer ...
12 sie 2021 · The B.1.1.7 variant of SARS-CoV-2 first detected in the UK harbors amino-acid substitutions and deletions in the spike protein that potentially enhance host angiotensin conversion enzyme 2...
12 kwi 2021 · Our report gives an early assessment of the B.1.1.7 variant's genomic characteristics and associated clinical outcomes, bridging the period over which B.1.1.7 became the predominant strain in two north-central London hospitals, mapping the start of the winter, 2020, surge in COVID-19 cases.
