2021年8月30日 · By injecting cells with a synthetic mRNA that encodes a viral spike protein, an mRNA vaccine can direct human cells to make a viral spike protein and evoke an immune response without a person ever having been exposed to the viral material.

Today, the U.S. Food and Drug Administration approved and granted emergency use authorization (EUA) for updated mRNA COVID-19 vaccines (2024-2025 formula) to include a monovalent (single)...

2025年1月30日 · An mRNA vaccine gives cells instructions for how to make the S protein found on the surface of the COVID-19 virus. After vaccination, the body's muscle cells begin making the protein pieces and showing them on cell surfaces. This causes the body to create antibodies.

2024年9月3日 · First, mRNA COVID-19 vaccines are given in the upper arm muscle or upper thigh, depending on the age of who is getting vaccinated. After vaccination, the mRNA will enter the muscle cells. Once inside, they use the cells’ machinery to produce a harmless piece of what is called the spike protein.

Both the Pfizer-BioNTech COVID-19 vaccine (Comirnaty®) and Moderna COVID-19 vaccine (Spikevax™) use messenger ribonucleic acid (mRNA) to stimulate an immune response that can protect against future infection.

2024年10月25日 · For COVID mRNA vaccines, they do this by giving your cells the mRNA instructions they need to make the spike protein — a unique, recognizable part of SARS-CoV-2 (the virus that causes COVID-19). Ideally, your body responds to …

2021年11月1日 · The very first vaccines approved in the US to prevent COVID-19 were an entirely new type: mRNA vaccines. Over the past year, the Pfizer/BioNTech and Moderna mRNA vaccines have proven unusually effective and safe.

2021年8月25日 · The COVID-19 pandemic has established mRNA vaccines as a rapid, effective and safe approach for the protection of individuals from infectious disease.

The Pfizer-BioNTech and Moderna COVID-19 vaccines are messenger RNA vaccines, also called mRNA vaccines. Learn more about Pfizer-BioNTech and Moderna COVID-19 vaccines, including who can get them, doses, and ingredients.

2025年1月22日 · The mRNA-1273.815 vaccine provided significant protection against COVID-19-related hospitalizations and medically attended COVID-19 among US adults.