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New COVID-19 variants continue to pop up. Experts explain how many COVID variants there are, important subvariants, and the evolution of SARS-CoV-2 virus.
The term variant of concern (VOC) for SARS-CoV-2, which causes COVID-19, is a category used for variants of the virus where mutations in their spike protein receptor binding domain (RBD) substantially increase binding affinity (e.g., N501Y) in RBD-hACE2 complex (genetic data), while also being linked to rapid spread in human populations ...
Alpha (B.1.1.7) The first highly publicized variant of the SARS-CoV-2 virus was called alpha (B.1.1.7). The variant began circulating in Great Britain in late 2020.
In a study examining COVID-19 infections, hospitalizations, and deaths in Nebraska after vaccination with the 2023-2024 vaccines that targeted the XBB.1.5 variant, researchers found that vaccine ...
Pages in category "Variants of SARS-CoV-2" The following 19 pages are in this category, out of 19 total. This list may not reflect recent changes. ...
False-colour transmission electron micrograph of a B.1.1.7 variant coronavirus. The variant's increased transmissibility is believed to be due to changes in the structure of the spike proteins, shown here in green. There are many thousands of variants of SARS-CoV-2, which can be grouped into the much larger clades. [142]
XEC has several mutations on the spike protein, which is what SARS-CoV-2 (the virus that causes COVID-19), uses to latch onto your cells and infect you. As a result, it may be more infectious than ...
SHA-2 (Secure Hash Algorithm 2) is a set of cryptographic hash functions designed by the United States National Security Agency (NSA) and first published in 2001. [3] [4] They are built using the Merkle–Damgård construction, from a one-way compression function itself built using the Davies–Meyer structure from a specialized block cipher.