The government has canceled nearly $500 million in research grants into the revolutionary technology, which experts believe could prove to be a game changer for global health.

This was one in a continuing line of moves that have put Kennedy's vaccine skepticism into public policy, though scientists say the vaccines are safe.

The U.S. Department of Health and Human Services will cancel contracts and pull funding for some vaccines that are being developed to fight respiratory viruses like COVID-19 and the flu, specifically targeting vaccines that use mRNA technology.