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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.
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 ...
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.
After a fairly quiet spring, COVID-19 cases are on the rise again in the U.S. and SARS-COV-2, the virus that causes COVID-19, keeps churning out new variants. The latest is a trio, KP.2, KP.3, and ...
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.
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.
The heavily mutated COVID-19 variant is now the fastest-growing strain in the US. Experts discuss JN.1 symptoms, transmission, vaccines and more. JN.1 accounts for over 90% of US COVID cases: Know ...
On 4 January 2021, UK newspaper The Telegraph reported that Oxford immunologist Sir John Bell believed there was "a big question mark" over the new South African variant's potential resistance to COVID-19 vaccines, raising fears that vaccines might not work as effectively on that variant strain. [24]