Six Frankfurt Airport workers contracted malaria this summer after mosquitoes were likely carried into Germany on a flight, and two died. The outbreak prompted a rapid investigation, mosquito trapping, and efforts to determine where the insects originated. At the same time, malaria kills roughly 600,000 people each year, with the overwhelming burden falling on sub-Saharan Africa. The contrast raises a difficult bioethics question about global health priorities: does the urgency given to a health threat reflect the scale of the problem, or does it also depend on where it occurs and who is affected? Read more here.