Pneumonia is the leading cause of death in children. Pfizer has a vaccine. Last year, the company made more than $6 billion of revenue from that vaccine. This year, they offered to donate a supply of the vaccine to Doctors Without Borders. But the organization rejected the donation. The Atlantic’s James Hamblin asks the key question: “How has this system come to such a head that humanitarian doctors would refuse a million vaccines on principle?”

+ Jason Cone, US Executive Director of Doctors Without Borders: Why we rejected Pfizer’s offer of pneumonia vaccines.