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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 ...
Initially, most COVID‑19 vaccines were two-dose vaccines, with the exception of a single-dose Janssen COVID‑19 vaccine and vaccines with three-dose schedules, Razi Cov Pars and Soberana. However, immunity from the vaccines has been found to wane over time, requiring people to get booster doses of the vaccine to maintain protection against ...
On July 22, 2020, the U.S. government placed a conditional advance-purchase order of $2 billion with Pfizer to manufacture 100 million doses of a COVID-19 vaccine, with an option for 500 million more, for use in the United States if the vaccine was shown to be safe, effective, licensed, and authorized by the Food and Drug Administration (FDA).
A single shot of the Pfizer vaccine cuts the chance of hospital admission and death from Covid-19 by more than 75% among the over-80s, according to real-world data from Public Health England (PHE).
Pfizer’s coronavirus vaccine is 90% effective at preventing hospitalizations for up to six months even as its effectiveness against infections tumbles over time, a new observational study has found.
The first two COVID vaccines to gain authorization in the U.S. have proven to be 94% effective at preventing hospitalizations among fully vaccinated adults 65 years or older, the CDC said Wednesday.
The COVID-19 vaccination campaign in the United States is an ongoing mass immunization campaign for the COVID-19 pandemic in the United States. The Food and Drug Administration (FDA) first granted emergency use authorization to the Pfizer–BioNTech vaccine on December 10, 2020, [7] and mass vaccinations began four days later.
FDA's external advisory committee on vaccines is scheduled to meet on April 6 to discuss Covid-19 booster doses, as well as best practices for companies trying to develop shots against future ...
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