Tuberculosis could be eradicated. So why isn’t it?

Everything Is Tuberculosis
John Green
Crash Course Books, $28

A few years ago, renowned author John Green met a boy named Henry at Lakka Government Hospital in Sierra Leone. Henry was small and, at first glance, looked about 9 years old to Green. Everyone at the hospital seemed to know and love him, making Green believe he was the child of a health care worker. That is until staff revealed that Henry was a patient with multidrug-resistant tuberculosis — and that he was…