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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 ...
The Delta variant (B.1.617.2) was [3] [4] a variant of SARS-CoV-2, the virus that causes COVID-19. It was first detected in India on 5 October 2020. The Delta variant was named on 31 May 2021 and had spread to over 179 countries by 22 November 2021. The World Health Organization (WHO) indicated in June 2021 that the Delta variant was becoming ...
Infectious disease experts are weighing the need for booster shots of the Pfizer/BioNTech or Moderna mRNA-based vaccines for Americans who received Johnson & Johnson's one-dose vaccine due to the ...
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, and mass vaccinations began four days later.
Two doses of Pfizer or AstraZeneca's COVID-19 vaccine are nearly as effective against the highly transmissible Delta coronavirus variant as they are against the previously dominant Alpha variant ...
The U.S. government said on Wednesday it plans to make COVID-19 vaccine booster shots widely available to all Americans starting on Sept. 20 as infections rise from the Delta variant of the ...
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 >PFE.N< vaccine is highly effective against the Delta variant of COVID-19, a Pfizer official in Israel said on Thursday. First identified in India, Delta is becoming the ...