Doctors worry that President Donald Trump’s new executive order on vaccines will stoke fear and confusion among parents at a time when measles is raging, immunization rates are falling and children are heading back to school.

An adult who was infected with measles has died in New Mexico, though the virus has not been confirmed as the cause.

The number of children receiving routine vaccinations in Florida continues to decline, mirroring a national trend. Florida’s vaccination rate for kindergartners is among the lowest in the country.

Kentucky's largest city has been praised for managing to raise childhood vaccination rates at a time when may places are trying to prevent further declines.