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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 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.
The bottom line. Some COVID-19 vaccines, such as those produced by Pfizer-BioNTech and Moderna, require two doses. Others, such as the Johnson & Johnson vaccine, only require one dose. Some ...
Four primary types of COVID-19 vaccines are being used throughout the world. ... Two doses of Pfizer. Vaccine effectiveness was 65.5 percent in the 2 to 4 weeks after the second dose but dropped ...
The COVID-19 mRNA vaccines from Moderna and Pfizer–BioNTech have efficacy rates of 90 to 95 percent [citation needed]. Prior mRNA, drug trials on pathogens other than COVID-19 were not effective and had to be abandoned in the early phases of trials. The reason for the efficacy of the new mRNA vaccines is not clear.
The Bridge Access Program, from the Centers for Disease Control and Prevention (CDC), offers updated Covid-19 vaccines to people who do not have health insurance (or those whose health insurance ...
The short-term side effects of the authorized COVID-19 vaccines are similar. The side effects typically start within a day or two of getting the vaccine and may include: pain, redness, or swelling ...
The vaccine should slow the spread of COVID-19 around the world. Fewer people should get sick, and more lives can be saved. The Pfizer, Moderna, and Novavax vaccines have been shown to be at least ...