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A COVID‑19 vaccine is a vaccine intended to provide acquired immunity against severe acute respiratory syndrome coronavirus 2 ( SARS-CoV-2 ), the virus that causes coronavirus disease 2019 ( COVID‑19 ). Prior to the COVID‑19 pandemic, an established body of knowledge existed about the structure and function of coronaviruses causing ...
The Pfizer–BioNTech COVID-19 vaccine, sold under the brand name Comirnaty, [2] [32] is an mRNA-based COVID-19 vaccine developed by the German biotechnology company BioNTech. For its development, BioNTech collaborated with the American company Pfizer to carry out clinical trials, logistics, and manufacturing. [44] [45] It is authorized for use ...
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. [8][9][10]Finland, Denmark, and Norway suspended the use of the Oxford ...
While mRNA vaccines, such as the Pfizer–BioNTech COVID-19 vaccine and Moderna COVID-19 vaccine showed higher efficacy of +90%, mRNA vaccines present distribution challenges for some nations, as some may require deep-freeze facilities and trucks. By contrast, the BIBP vaccine can be transported and stored at normal refrigeration temperatures.
Investors have fled from Pfizer as pandemic worries declined and billions of dollars in COVID-19 vaccine and treatment sales disappeared. Pfizer's shares were up 2.6% at $29.30 in afternoon trading.
Covid-19 hospitalization rates have fallen from nearly 8 new admissions for every 100,000 people in the first week of the year to about 1 new admission for every 100,000 people at the end of April ...
The Oxford–AstraZeneca COVID‑19 vaccine, sold under the brand names Covishield and Vaxzevria among others, is a viral vector vaccine for the prevention of COVID-19. It was developed in the United Kingdom by Oxford University and British-Swedish company AstraZeneca , [33] [34] [35] using as a vector the modified chimpanzee adenovirus ChAdOx1 ...
The Janssen COVID‑19 vaccine is used to provide protection against infection by the SARS-CoV-2 virus in order to prevent COVID‑19 in people aged eighteen years and older. [37] [1] The vaccine is given by intramuscular injection into the deltoid muscle. The initial course consists of a single dose.