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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 ...
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.
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.
The Oxford–AstraZeneca COVID-19 vaccine, sold under the brand names Vaxzevria [6] and Covishield, [7] is a viral vector vaccine [8] produced by the British University of Oxford, British-Swedish company AstraZeneca, and the Coalition for Epidemic Preparedness Innovations.
Omicron constitutes the current strain of COVID-19 in circulation. “Omicron is very contagious. That was how it out-competed the Delta variant,” Dr. Yancey says.
How COVID‑19 vaccines work. The video shows the process of vaccination, from injection with RNA or viral vector vaccines, to uptake and translation, and on to immune system stimulation and effect. Part of a series on the COVID-19 pandemic Scientifically accurate atomic model of the external structure of SARS-CoV-2. Each "ball" is an atom. COVID-19 (disease) SARS-CoV-2 (virus) Cases Deaths ...
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]