The US health department is to cancel $500 million in funding for 22 mRNA vaccine projects targeting viruses such as flu and Covid-19, including those by Pfizer and Moderna. Health Secretary Robert F Kennedy Jr, a vaccine sceptic, claimed mRNA technology poses more risks than benefits for respiratory viruses. Health experts strongly disagreed, noting that the vaccines were pivotal in slowing Covid-19 and saving millions of lives. They warned that withdrawing support undermines one of the most effective tools for pandemic preparedness. Kennedy argued the department would fund alternative vaccine platforms with broader safety records. However, experts say that viruses mutate naturally and that mRNA vaccines are remarkably safe, effective, and faster to develop than traditional vaccines. The decision is part of broader changes Kennedy has made to vaccine policy, including removing Covid vaccines from the recommended immunisation schedule for healthy children and pregnant women.