Measles is an extremely contagious disease. It's also extremely preventable. There's a vaccine. It's highly effective.

For decades it has made measles outbreaks in the U.S. relatively rare, and measles deaths rarer still. But the U.S. has now seen more than 700 measles cases this year, and 3 deaths so far with active outbreaks across six states.

The federal response is under scrutiny because Health and Human Services Secretary, Robert F. Kennedy, Jr. has made a career spreading false information about vaccines.

What are this administration's views on vaccines, and what do they mean for what is already one of the worst U.S. measles outbreaks this century.

Kennedy publicly promised he would support vaccines. Dr. Peter Marks, who was forced out as the nation's top vaccine regulator says his department isn't doing enough.

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Vaccine expert worries child measles deaths are being 'normalized'

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