Experts say the Trump administration's changes to vaccine and medicine recommendations in the US could undermine health messaging worldwide. Recent changes to vaccine and medicine recommendations in the US could undermine health messaging in other countries, experts say. New vaccine and drug recommendations in USThe ACIP has altered its recommendations for the MMRV and COVID-19 vaccines. The conflict between political messages and established health advice has been lamented by many experts following the Trump administration's announcements. He said there was a risk that vaccine debates in the United States could undermine trust in health recommendations elsewhere.