
So-called mRNA vaccines saved millions of lives during the COVID-19 pandemic — and now scientists are using that Nobel Prize-winning technology to try to develop vaccines and treatments against a long list of diseases including cancer and cystic fibrosis.
But this week, U.S. Health Secretary Robert F. Kennedy Jr., a longtime vaccine critic, canceled $500 million in government-funded research projects to create new mRNA vaccines against respiratory illnesses that might trigger another health emergency.