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5 days ago · As of 3 March 2023, ECDC has de-escalated BA.2, BA.4 and BA.5 from its list of SARS-CoV-2 variants of concern (VOC), as these parental lineages are no longer circulating. ECDC will continue to categorise and report on specific SARS-CoV-2 sub-lineages in circulation that are relevant to the epidemiological situation.
2 days ago · Because SARS-CoV-2 continues to circulate throughout the year, and because of the increased risk for COVID-19–related severe illness in persons aged ≥65 years, the protection afforded by updated vaccines against JN.1 and other currently circulating variants, and the expected waning of vaccine-conferred protection against disease, on ...
5 days ago · Immune T cell defense is coping with COVID-19 variants of concern (for now) Dec 1, 2022. SARS-CoV-2 variants from mink evade inhibition by antibodies. Apr 19, 2021.
5 days ago · A study reveals that a new sequencing technique, tARC-seq, can accurately track mutations in SARS-CoV-2, providing insights into the rapid evolution and variant development of the virus. The SARS-CoV-2 virus that causes COVID has the unsettling ability of often generating variants of itself. Other viruses also mutate, but as SARS-CoV-2 quickly ...
4 days ago · The SARS-CoV-2 virus, responsible for COVID-19, exhibits a troubling tendency to produce variants frequently. While viruses commonly mutate, the rapid spread of SARS-CoV-2 during the pandemic, resulting in millions of deaths, presented a significant challenge: its ongoing evolution continually tested the efficacy of human immune response and impeded vaccine development efforts.
1 day ago · This mutation in SarsCoV-2 drives the development of new COVID-19 variants, that may be more capable of escaping established immune responses. However, understanding these mutations has been complicated by the low levels of virus inside cells from infected hosts. This means there are only small amounts of RNA to sequence and established methods ...
6 days ago · COVID-19 pandemic. SARS-CoV-2, the causative agent of COVID-19, was first introduced to humans through zoonosis (transmission of a pathogen to a human from an animal), and a zoonotic spillover event is the origin of COVID-19 that is considered most plausible by the scientific community. [a] Human coronaviruses including SARS-CoV-2 are zoonotic ...
