Tuberculosis is the deadliest infectious disease in the world. Why does something that’s curable still kill millions every year? And what does this illustrate about global health disparities? John Green is the author of “Everything Is Tuberculosis: The History and Persistence of Our Deadliest Infection.” Green is also the co-creator of Vlog brothers, which he co-hosts with his brother Hank Green. He joins WITHpod to discuss why tuberculosis is seen as a disease of poverty, what the disease exposes about healthcare inequities, concerns about the Trump administration retracting foreign aid and more.