Public health officials say the trend mirrors a tragedy that unfolded in 2019 on the island nation of Samoa, when false claims about vaccine safety helped trigger a deadly outbreak that killed 83 people, most of them children.
Experts warn the U.S. is on a similar path, with vaccine skepticism growing, amplified by social media and mixed messages from the nation’s top health official, U.S. Health and Human Services Secretary Robert F. Kennedy Jr.