An 18-month-old boy has died of measles amid an outbreak in Berlin, a hospital in the German capital said Tuesday. An autopsy on the child, who wasn’t inoculated against measles, showed that he had an unspecified other disease as well but that wouldn’t have led to his death without the measles infection, the Charite hospital said. It is the first known death in an outbreak in which Berlin has recorded more than 570 cases since October. Officials believe the outbreak began with a child asylum-seeker from Bosnia. They said it spread to the wider population partly because immunization rates among over-45s are low, and younger adults also are at risk because many only received one shot instead of two, as is now recommended.