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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.
1 paź 2024 · ECDC utilises three categories of variant classification to communicate increasing levels of concern about a new or emerging SARS-CoV-2 variant: variant under monitoring (VUM), variant of interest (VOI) and variant of concern (VOC).
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.
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.
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.
14 lut 2022 · Thereby we identified a new B.1.1.7 sub-lineage carrying additional mutations of nucleoprotein G204P and open-reading-frame-8 K68stop. Of note, this B.1.1.7 sub-lineage is the predominant B.1.1.7 variant in several European countries such as Czech Republic, Austria, and Slovakia.
