Ultimately, there’s no getting around the need for a primary health care system with well-stocked clinics and staff. Community health workers are a good complement to a functional primary health care system, and a step in the right direction for places that don’t yet have one (like Liberia). As Raj says, no one should die simply because they live too far from a doctor. It’s great to see him and his colleagues trying to make that idea a reality. We need more passionate innovators like them.