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A tray with a Pfizer-BioNTech COVID-19 vaccine at a health care center in Miami on May 29, 2025. Joe Raedle/Getty Images
A tray with a Pfizer-BioNTech COVID-19 vaccine at a health care center in Miami on May 29, 2025. Joe Raedle/Getty Images
Health Secretary Robert F. Kennedy Jr., in his department’s latest move against messenger ribonucleic acid (mRNA) technology, has canceled contracts for vaccines and therapeutics that utilize the mRNA platform.
Here’s what to know about the technology.
How Does It Work?
The mRNA, through an injection, typically in the upper arm, is delivered into the body, where it teaches cells to produce proteins.
