mRNA vaccines hold promise for many diseases. Now the tech is under fire 

U.S. officials cite safety and efficacy concerns. Scientists say that's factually incorrect

Robert F. Kennedy Jr sits in front of a microphone wearing a suit and tie.

HHS secretary Robert F. Kennedy Jr.’s announcement that the U.S. government will wind down nearly two dozen projects involving mRNA vaccine research for infectious diseases could have big repercussions for related fields, experts warn.

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The United States may be losing its edge in mRNA technology­­.