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SARS-CoV-2 is the virus that causes coronavirus disease 2019 (COVID-19). Some have been stated, to be of particular importance due to their potential for increased transmissibility, [1] increased virulence, or reduced effectiveness of vaccines against them. [2] [3] These variants contribute to the continuation of the COVID-19 pandemic.
Alpha appears to have been only mildly more contagious than the original strain though it did cause a more severe disease. It had a variant called B.1.1.7 that caused more severe disease.
The COVID-19 pandemic was the third leading cause of death globally in 2020 and the second in 2021, according to a recent World Health Organization report.The almost 13 million lives lost during ...
This article aims at keeping an up-to-date list of Coronavirus strains and subspecies successfully isolated and cultured in laboratory, a task which is often challenging. When relevant it shall include a few synthetic chimera as well as some strains that were only propagated in laboratory animals.
KP.3.1.1 is still the dominant COVID-19 variant in the United States as it accounts for nearly 60% of positive cases, but the new XEC variant is not far behind, recent Centers for Disease Control ...
Epsilon variant, also known as CAL.20C and referring to two PANGO lineages B.1.427 and B.1.429, is one of the variants of SARS-CoV-2, the virus that causes COVID-19. It was first detected in California, USA in July 2020. [1] As of March 2022, Epsilon is considered as a previously circulating variant of interest by the WHO.
New COVID-19 variants known as “FLiRT,” KP.2, KP.3, and KP.1.1, are spreading fast. Doctors explain symptoms, prevention, and how the vaccines stack up.
Coronavirus diseases are caused by viruses in the coronavirus subfamily, a group of related RNA viruses that cause diseases in mammals and birds. In humans and birds, the group of viruses cause respiratory tract infections that can range from mild to lethal.